Yuil H-1 Belly Chain With Padlock and Universal Black Box Transport Security from South Korea

This is the Yuil H-1. It is a black box system with a belly chain that further restricts the movement of the limbs, while also providing some more limitation of the hands, at the same time limiting access to the keyway to thwart picking the handcuffs open.

This is a South Korean take on a US design Blue Box system, which is very similar. Designed for transport situations where extra restriction is needed during transport to prevent escape or effective attacks of guards. The body of the box is made from plastic or polymer and the slide that goes over the top to hold the box closed and allow locking is made of strong aluminium. The chain is smooth with no harsh welds or any snagging on clothing. The design of the black box also has holes for the double lock, so once fitted, the handcuffs can be tightened to the adequate amount and then be double locked while the box is fully set up and secured. The padlock it comes with only locks on one side, but it uses a ball bearing mechanism which cannot be shimmed, which is a nice feature.

The black box works with several brands (I may do a simple video at some point showing which types of handcuffs fit this Yuil black box in the future). It adds more security to handcuffs. You can also forgo the belly chain and use the padlock directly on the black box, if all you care about is further adding security to the handcuffs but don't need such rigid restriction of the limbs!

A quite flexible system, really.

Also, this is the first appearance of my genuine US prison Bob Barker brand orange jumpsuit. I wanted orange alternatives to my khaki so I can alternate, based on what I want. I have the orange 2-piece scrubs version also, yet to be used. Plain prison clothing like this in Khaki or orange, provide a nice plain background that is bright enough, with no distracting patterns or dark colours that reduce restraint visibility. This way, you can more easily see the handcuffs or leg irons that are being shown in a worn context, compared to back in the day when I wore my usual black clothing. After all, the items are the only star of my videos! Plus the clothing is a good match for the context of the usage of restraints.

Enjoy!

Clejuso model 8 leg irons from Germany

These are German leg irons from Clejuso, model 8.

These are made from Zamak material rather than steel, similarly to their model 13 and 15 beefy handcuffs. It's a strong zinc alloy, but requires more bulk of the material to off-set it's lack of inherent strength that steel would have. This produces a strong restraint that is not as heavy as a solid steel one would be.

They have a steel chain and the internal mechanism, except the spring, are also Zamak alloy. The springs are presumably steel.

They are not swing-through, but they have a double lock, as you would expect for safety and security reasons. It's basically like a HIATT 115 Scotland Yard handcuff, made larger for legs, with a double lock added.

The chain is short (just slightly less than 30cm long, which means your walking stride has to be significantly shorter than normal a normal walking pace. Also, the design of them is not super comfortable and if you try to walk faster, the rotating of the shackles can cause discomfort. So walking in these is much slower than normal. British Darby leg irons are more comfortable because of the more rounded shape means they can turn naturally around your ankle without causing pinch points, whereas these German ones do cause discomfort IF you try to walk faster.

The cheek plate has a lip on the inside, acting as a ward that protects the double lock. You cannot use a Clejuso model 13 or 15 key to disengage the double lock because the lip blocks you. The double lock could be picked open with a long, strong and bent tool, but I have not experimented much, because I cannot simply replace these leg irons in the UK if I were to break them. The single lock is easy to pick using a parker jotter pen clip or similar strong bit of thin metal.

It is not apparent at first glance but there is a right and wrong way to apply these. The clasp that connects the chain to the shackle has a tilt. They need to be worn with the clasp on the front-facing side with the angle pointing inwards. If you try any other method, the chain is further shortened and trivially creates much more discomfort and awkwardness while walking.

The small length of the chain, like the British Darby leg irons, means than standing with your legs together does not drag the chain all over the floor or make loud clacking noises as you walk, since the chain does not touch the floor while walking. This helps protect the floor from having steel chains scraping across it as the person walks.

All in all, this is a high quality and effective leg iron walking restraint.

Enjoy!

Scarce / Rare Smith & Wesson 926 Airweight Lightweight Aluminium 1970s / 1980s Handcuffs

These a pair of lightweight (known as airweight due to the extreme lack of weight) Smith & Wesson 926 chain link handcuffs. They are made from aluminium or aluminum and are exceptionally, extremely, ultimately, ludicrously light at 100 grams!

These have a single pawl like most S&W handcuffs and has the usual double locking. This is an old pair, likely from the 1970s or 1980s but in excellent like-new condition, pretty much. The bow teeth are still fully intact and sharp!

To see them, you might think they were a model 90 basic old S&W handcuff, but the rarity of handcuffs in this weight-class is where they stand out. These are so light, lighter than even Peerless 730 Superlite. They are so light people would swear they are toys. They weigh absolutely nothing. If you put some fur on these from a toy set of handcuffs and warm the handcuffs in your pocket to body temperature and hand them to someone, they would absolutely believe they were toys, not a hard to find expensive pair of handcuffs from one of the world's best known gun manufacturers!

I got a great price on these from @MrHandcuff . Normally these can be anywhere around £150 / $200 etc. While not strictly "rare" they are very 𝙫𝙚𝙧𝙮 hard to find. This model was manufactured somewhere between the years of 1958 to 1979, though not in as large batches as the regular steel handcuffs, making them harder to find.

HIATT in the UK made a similar extremely lightweight handcuff, based on the 1980 pattern handcuff, but due to the larger costs to make them, they opted for less and less aluminium and more of a steel alloy which is lighter than normal handcuffs but not as RIDICULOUSLY lightweight as their early models, like this Smith & Wesson pair.

I used some very fine wire wool to clean some tarnish from the top side near the swivels and I polished with Peek cleaner and Renaissance wax, as well as lubricating with WD40 Specialist Dry PTFE (do not ever use graphite on aluminium handcuffs!) They are amazing!

At this moment they are not featured in my collage/tower image of my handcuff collection, but I shall be doing that as my next task once I get some time to set everything up.

Enjoy!

ASP Rigid Ultra Cuff 600 TRAINING Red pawl handcuffs

Just got back from a dog walk, please excuse my Darth Vader sound! This is the training version of the ASP model 600 rigid handcuffs. They are made from forged aluminum or aluminium as known in the UK, with steel bows. The red pawls and red body indicators signify that this is a training model. If that is not sufficient, it has in 5 places stamped on it TRAINING ONLY in case anyone does not know the meaning of the red colouration.

This handcuff is designed for easy training, to speed things up, since when single locked, the wearer can pull them off without the operator having to use a key on each bracelet. This can speed up training. Also for people interested in picking handcuffs, it offers a safety feature so that the wearer can get out of them in case their picking attempts fail.

This technology is commonly referred to in the magic/escapology community as "Gimmicking". The concept of gimmicking is that there is an alternative mechanism to get out of the handcuffs without having to properly use a key. Usually a quick mechanism. This particular type of gimmicking is referred to as "bridge jumpers" because it was used by magicians etc to escape handcuffs in an instant when jumping from a bridge or building into a body of water, where every tiny moment matters. Some types of gimmicking are more elaborate and able to withstand audience inspection etc. This style is very basic and makes a loud zipping sound when you escape them, so they are not best suited for magic tricks, though they work great as a safety feature during training or lockpicking experiments.

Long ago there were some red-pawl ASP handcuffs made which were NOT "escapable" training models. So if buying second hand, ask the seller and test them yourself to be sure they are what you expect.

They are very nice. The body of the handcuffs is absolutely identical to any other of their similar handcuffs. The only difference is the fact that red is ONLY used for training models and they also have TRAINING ONLY stamped on them. If you were to remove the red locksets and replace with a standard "real" lockset of yellow, green or blue, you would have an entirely secure and fully functional handcuff. The magic of this capability is entirely in the pawls / locksets which have the red double locking window.

Anyway, hopefully this has enlightened you as to the purpose and capabilities of the red "training only" models of ASP handcuffs.

Enjoy! (please like and subscribe :D )

🇺🇸 ASP 700 Ultra ankle cuffs aka leg irons (incorrect stamping) with nice carrying case

These are a nice pair of model 700 ASP ankle cuffs, better known as leg irons. They are the Ultra line which are made from FORGED aluminium or aluminum. Very strong and very sturdy.

This pair has incorrect stamping on which would normally be used on a pair of handcuffs. It says "Model 400". Which should actually read "Model 700". I wonder if this was an early run?

I love ASP handcuffs and these leg irons are a nice addition to my collection. If you are reading this, stay tuned because I have a different pair of leg irons being sent to me!

I love the carrying bag these come in. It's of very nice quality. When you interleave the leg irons as I have shown in the bag, they kind of stay together as a nice solid piece rather than floating around and scratching up against each other.

I do wish ASP would increase their QC Quality Control. This is not the first time I have heard of incorrect model numbers stamped on cuffs. My pair of these ankle cuffs has a little bit of an issue with the locking mechanisms, in that the centrally located keyways did not work to disengage the single lock using the key provided.  When the bows are not locked in the body of the cuff, the key would work but when they are closed, even by a single tooth, the key would not work. This is due to the presence of the bow in the mechanism pushing the pawl down a little bit. The central keyways have less travel room than the keyways that are on the edge of the cuff. So in my case, the key would stop at 45 degrees. I have filed my key to accommodate for the issue.

All in all though, I really do like these ankle cuffs. The central round ring in the chain is for use to be connected to the expensive ASP transport system, to connect them to the handcuffs. I do not have this and while I did create a DIY belly chain to demonstrate the transport rigid handcuffs, I'm not going to lengths to put anything together to connect these leg irons with the handcuffs as there's no real point for me.

They are comfortable.

By the way, in case you didn't know, ASP stands for "Armament Systems and Procedures"

Anyway, enjoy and I will see you next time 😀

(The little lioness guest appearing is our cocker spaniel, Amber. We've had her just over a year. She's about 6 and a half I think)

Yuil M-09 Indigo Blue Lightweight Handcuffs NIJ

These are Indigo Blue versions of the Yuil M-09 lightweight handcuff.

They have 2 pawls, anti-shim protection, standard handcuff keys work with them and they have some pick resistance too.

They have a nice blue colour. However, the bow alignment is not what I would have hoped and the edges are sharply angular. Both before and after recording I have had to use a diamond knife sharpening rod to lightly take the bur off the edges of the cheek plates (body of the handcuff). The bow is decently smooth on the edges but the cheek plates needed a slight bit of attention.

Not the most comfortable handcuff I have ever tried, for sure. But they do look cool and are NIJ certified.

They are lightweight, coming in at 163 grams.

All in all, I am happy I have them in my collection :) Especially now that I lightly filed off the burs.

Enjoy!

Kyung Chang KCH 010 Lightweight Korean Police Pink Handcuffs [NIJ]

These are the Kyung Chang Lightweight KCH 010 handcuffs in pink colour.

They are a South Korean police grade handcuff which are very lightweight. They have 3 pawls, steel bows, aluminium / aluminum body and come with 2 special keys which are best suited for these handcuffs.

Normal "standard" universal handcuff keys work in these handcuffs HOWEVER, it is crucially important that you get to know which way to turn for the double lock and if you use a standard key, STOP TURNING as soon as you have disengaged the double lock. If you keep turning that same direction after you have disengaged the double lock, the key will be stuck and you will be trapped in the handcuffs. See the video linked below for info on how to try and get out of them if you really mess up in this manner.

Short video of a key getting stuck in the handcuff: https://www.youtube.com/watch?v=pJKBx...

Video on the techwg channel that shows ways to try and get out of the handcuffs and try to get your key out safely: https://www.youtube.com/watch?v=rHNpf...

Kyung Chang handcuffs are very nice, however please do be careful if you end up using different keys in them... The keys they come with are perfect and you have nothing to worry about, but do not be the person on a 999 or 911 recording asking for help because you got trapped in handcuffs using an ill-suited key! That kind of video would go public, be shared and stay with you forever and everyone would know. Not a good image!

Enjoy!

ASP Ultra Cuff Model 600 Rigid Transport Handcuffs & DIY Belly Chain Demo of Transport Feature!

These are the ASP Ultra Cuff Model 600 Rigid Transport handcuffs. These have the blue high security mechanism which uses a special key (normal keys can be modified to work with them).

These rigid handcuffs are very nice. The most comfortable of all rigid handcuffs I have tried. They have great features like rounded edges, keyhole activated access to the double lock activation and they can fit a larger size wrist compared to conventional handcuffs.

They have a rectangular hole in the middle which is for use with the official ASP Transport Kit, which consists of either a chain model or a nylon webbing belt version. These transport kits are not cheap, so I made a make-shift DIY belly chain which performs the same basic feature of securing the handcuffed hands close to the body. This helps stop a suspect or convict from strangling someone or attacking a guard or police officer etc. The official kits have options to connect them to leg irons also for added security, though it looks a bit weird with how that system works. (See official free ASP youtube videos on their transport kits to see them in action).

These handcuffs are really nice. You can put whatever security level of locks you want into them. Mine came with green European 3 pawl locking mechanisms, which I swapped around my mechanisms and put a blue set in these and moved the greens into a different pair. I love the blue because they are more secure and less common. The yellow are very basic and I am not a big fan of them. I don't know why they bother even making the basic yellow mechanism when they make the green one which is slightly better while still using standard keys.

My DIY belly chain / waist chain,  consists of a 4mm thick 316 stainless steel chain with long links, a 5mm thick Dee shackle and some JB Weld MarineWeld epoxy which I put on the threading and openings of the Dee Shackle to ensure it never unscrews ever again once installed onto the chain. Before I installed the Dee Shackle, I used a hacksaw and cut off the thumb-turn area, to make it more flat. Then I mixed and appliex the epoxy and screwed the bar in place using my pliers on the exposed sliver of the thumb-turn I left. Once fully cured in 24 hours, this epoxy is waterproof, acid proof, chemical proof. So I figured that would be more than adequate. I might keep this belly chain or one day I might sell it, so I wanted it to be a decent job.

One last thing to mention, I did have to do some small amount of grinding on the outer edges of the tall parts of the Dee Shackle and I had to use a dead-blow hammer outside to bend the shackle to allow it to slide in the transport hole on the cuffs and then to straighten it, I clamped it in a vice and used a pipe wrench to bend it back into being a nice even shape, while still fitting into the cuff's transport hole. It took a little bit of effort, but it was not hard to achieve.

The links to the exact Dee Shackle and chain that I used are below:

Chain: https://www.ebay.co.uk/itm/164917122044
Dee Shackle: https://www.ebay.co.uk/itm/3735316615...

Anyway, I hope you found this video useful or interesting, please like, subscribe, share and I will see you next time :D

Enjoy

HIATT British 3010 Lightweight NIJ Rated Chain Link Police Handcuffs weighs only 137 grams

These British Hiatt 3010 lightweight chain linked handcuffs are THE lightest handcuff in my entire collection. I'm super shocked! They even beat the Peerless 730C.

These are very nice handcuffs and in excellent condition. I actually wanted a good condition 2010 pair back for my collection, but I will settle for having these more rare lightweight Hiatts lol.

So shiny that they pick up fingerprints like nobody's business. However they are a very very welcome addition to my collection. These have their older style swivels, so they are probably an early model, because after a while they changed them to the TCH style ones.

Enjoy!

ASP 575 Blue Line Hinged Ultra Handcuffs Ultra cuff chain (secure, restrictive, yet comfortable)

These are the newer model of ASP hinged handcuffs. The model 575 Blue Line model. This range is known as the Ultra Cuff or Ultra Handcuff because of the "Forged Aluminum" construction for strength.

This forged aluminium construction is a vast step up from the old polymer over-mold "plastic" bendy models of days gone by. They are relatively light weight (230 grams) however are more bulky in size, so normal pouches might not fit.

All ASP handcuffs are designed to protect the officer/police force by protecting the person wearing the handcuffs. No sharp edges, ability to safely undo to loosen and quickly double lock again via the key, easy access to the keyholes no matter how they were applied to he person, a flat contact area on the bow which increases surface area when applying the cuff, minimising a pressure point which would normally happen when the curved edge would normally hit the wrist. Just well designed handcuffs for security and comfort.

This pair has the high security locking mechanisms, as indicated by the blue double lock indicator. Yellow is basic, green is medium (europe grade), blue is maximum security (normal keys do not work) and red are training models which can be pulled open without having to use the key.

When I received these they originally had the basic Yellow security installed. I changed this and put a set of Blue in for added security, since a hinged handcuff is more restrictive and therefore more secure anyway, so I figure I would put one of my sets of high security mechanisms in it.

Very very comfortable handcuffs.

ASP handcuffs are NOT CHEAP, however I wonder if police forces around the world might save more in the long run by using them, in the sense of not having to pay compensation for handcuff injuries, especially in the UK where rigid handcuffs are standard. It's easier to injure someone with rigid cuffs with angular edges than it is with hinged ones with nice rounded edges and easy adjustability options.

ASP handcuffs (other than the blue mechanism) are easy to pick, however all models of mechanisms of ASP handcuffs can have the double lock disengaged easily with a small paper clip and then be shimmed with a thin bit of metal. I feel they could improve this somehow. However police/military/security should be checking someone anyway, so if they do their job, it should minimise anyone having keys or tools on them to try and escape.

Hope you enjoy this!

Please like and subscribe and comment what you think and feel about these Ultra Handcuffs :)

Peerless 730C Superlite Bright Orange EXTREMELY Lightweight Handcuffs [NIJ]

These are the US police Peerless 730 Superlite chain link handcuffs in bright orange. These are the lightest handcuffs I have ever owned. (model 730)

These are fantastic, for lightweight handcuffs. They are NIJ certified, just as safe and secure as regular Peerless chain link handcuffs but way less weight to them.

They have only 1 pawl, as usual, but they work very nicely and many police and security prefer these because it either frees up weight on their belts or lets them carry 2 pairs of cuffs for very little additional weight gain compared to 1 pair of normal handcuffs.

I love the Peerless 730. They feel like toys. If you warm them up in your hands or keep them in your pocket and then hand them to someone, they would swear they are toys and put them on and wonder why they cannot get them off lol. They have a ceramic coating, which helps with the toy-feel, since it does not feel metal like when they are body temperature.

Enjoy!

#handcuffs

TKS Type E Patrol British Police Handcuffs {NIJ} Lightweight & Decently Secure

These are the TKS Type E Patrol handcuffs for police use. They were originally made by Latrobe LTH and after the company went bust the patent was purchased by Toye, Kenning & Spencer and continued to be made under their name in the 90's.

I am not sure how wide-spread their use was, because from what I can tell, Hiatt had the market for a long long time. The box says they were designed for "the beat officer" meaning they were for the police officer on the street.

These are very light, at about 190 grams according to the box. Made of aluminium and steel, they are decently chunky, comfortable, smooth edges and are NIJ certified!

These are pretty secure. They have a unique feature where in order to interact with the double locking mechanism, you need to pull on the chain, regardless of whether you are setting the double lock or disengaging it. To engage it you push the button on the side while the chain is pulled.

They have a split 2 pawl system which is hard to pick unless there is ware on the mechanism from use. Mine are almost new condition, seemingly from a collector. My pair came with no keys.

CoxysPicks was instrumental in helping me acquire these and he made 1 key for me. Since then I have made a couple more. So thanks to CoxysPicks. Check his channel out if you are as yet unaware of him, he makes great videos on lock picking and handcuffs!

I really like these handcuffs, very smooth, shiny, a secure mechanism, unique double lock mechanism. Just really cool! These can be escaped from though, as shown in the video, by simply disengaging the double lock and then shimming them open. But they are difficult to pick, when in newer condition.

Enjoy!

ASP Ultra Cuff Model 650 Rigid Forged Aluminum Lightweight STRONG Handcuffs

These are the rigid ASP Ultra Cuff model 650 handcuffs.

These are what they call forged aluminum or aluminium, which means they no longer have polymer overmold models which used to bend out of shape and annoy police officers and possibly create risks since their cuffs were non-functional if they got bent. The kind of aluminium they are made from is 7075-T6, which is as strong as mild steel without the weight. These are VERY strong handcuffs. They are pretty lightweight also, a good chunk lighter than TCH model 840.

This model is the aluminium bow model, indicated by it being all black. ASP handcuffs are designed to minimise injury to the wearer. They have all smooth edges and corners. They accommodate a wider range of wrist sizes than regular American handcuffs, though TCH Superior size handcuffs open a bit larger and close a bit smaller. But ASP is doing a good job with this. One thing to note is that these handcuff bracelets are slightly further distance from each other than TCH model 840, meaning a tiny bit less comfortable in the front, more comfortable in the back when palms are out and would be more UNcomfortable in a rear stack because one arm is forced higher up and one lower down.

As usual, keyholes on both sides, double lock can be engaged via the window or the key it's self. Which brings me to my big issue with this model of handcuffs. The double locking pin on the back of their handcuff keys is not long enough to properly work in their own handcuffs!! When I try and double lock via the window, it makes the clack sound like it has double locked, but that clack sound is the double lock pin on the key slipping off the plastic window double locker and hitting the metal. So you think they are double locked but they are NOT which in my mind is a BIG design oversight. If you have other keys like Zak Tool which have taller double locking pins on them, then you are able to properly use the window method to double lock, else you will have to insert your key and turn the opposite direction to engage the double lock. I cannot believe they have overlooked this, it astronomically boggles my mind. EDIT: ASP got back to me, they are aware of the issue and are designing new keys. If it pans out, they said they will send me a replacement key(s). But since I am in the UK, we shall see if they will send it/them to me.

That said, all in all I love these handcuffs. SO smooth, lovely, strong and high security due to me buying the blue pawl version. I would highly recommend them to US law enforcement if they want better control over subjects and more restriction of movement. Most comfortable positions are a stack in the front (as shown on the video) or would be a rear palms-facing-out position (not shown)

I LOVE these cuffs, but it is a shame about their design not taking into consideration the short length of their keys double locking pins. Remember with the 2-pawl blue double lock versions, normal handcuff keys do NOT work in them... You have to modify your keys with a split to allow them to work.

Enjoy!

#handcuffs

🚨🔗🇺🇸 Peerless 730C Superlite Zombie Green EXTREMELY Lightweight Handcuffs [NIJ]

These are the Peerless 730c in Zombie Green. They look amazing! Lovely bright green. They have all the same features as regular peerless chain link handcuffs but half the weight of average handcuffs.

They only weigh 5.2 oz or 141 grams, which is INSANE! They are so lightweight that they genuinely feel like toys. They have a ceramic finish for the colour, so they already feel less metal-like and if you put them in your pocket to warm them up and then hand them to someone, they would put money on them being a toy handcuff! They'd put them on and be like uh oh.... the're not toys.... are they?! lol. They are NIJ certified, so they have all the same strength and security requirements fulfilled that you'd get from their normal weight models of handcuffs.

They are aluminium or aluminum based handcuffs, which is how they get their very low weight. Officers sometimes like to buy these because they can carry 2 pairs of handcuffs and not add any extra weight to their duty belt. Or just carry the one pair and reduce the weight on their belt.

They are a bit more expensive than their regular models, but if you want a pair of lightweight handcuffs, these are the lowest weight ones I have ever owned. Kyung Chang are probably the next lightest and then Yuil aluminium models after that, but these are all American made Peerless Superlite handcuffs!

The nice colours they make, help you to identify your cuffs vs your colleagues cuffs, or just to have a nice personal style if you use them for non-official purposes..... :D

Because they are so light, when you press them down on the wrist, they do not swing through as far as their more weighty standard relatives, because the bow does not have as much weight. That said, they do have a nice positive rapid lock, but you just will have to click them in farther than you might otherwise, which is nothing new really, because in any case you always need to tighten handcuffs to the proper level of tightness anyway.

Enjoy!

New! ASP Forged Aluminum Ultra Handcuffs Model 450 HIGH SECURITY KEY [NIJ]

New! ASP Forged Aluminum Ultra Handcuffs Model 450 HIGH SECURITY KEY [NIJ]

These are the newer ASP Ultra Cuff in Forged Aluminum (or Aluminium in the UK) with high security blue locking mechanism.

These handcuffs require a special key which has a split in it. However you can modify existing keys by using a hacksaw to put a thin split in the bit, if you are careful. This mechanism makes them very hard to pick open without having a key.

You only get 1 key with them....... Normal keys will NOT work in these handcuffs!

They are very light weight, about 205g but are very strong.

The locking mechanisms can be removed and replaced depending on the need (change of level of security or repair etc)

They are way more rugged than the older thinner more bendy polymer coated versions.

They are comfortable and offer an arresting officer/security the ability to quickly disengage the double lock, undo the cuffs to adjust them and quickly double lock again using the key in the keyway, instead of having to remove the key and activate the slot to double lock. Which is a nice addition.

I highly can recommend this pair of ASP cuffs. They are a very worthy new design and are NIJ certified.

Enjoy

Kyung Chang Handcuffs KCH 010 Lightweight [NIJ]

These are the Kyung Chang Lightweight KCH 010 handcuffs in pink colour.

They are a South Korean police grade handcuff which are very lightweight. They have 3 pawls, steel bows, aluminium / aluminum body and come with 2 special keys which are best suited for these handcuffs.

Normal "standard" universal handcuff keys work in these handcuffs HOWEVER, it is crucially important that you get to know which way to turn for the double lock and if you use a standard key, STOP TURNING as soon as you have disengaged the double lock. If you keep turning that same direction after you have disengaged the double lock, the key will be stuck and you will be trapped in the handcuffs. See the video linked below for info on how to try and get out of them if you really mess up in this manner.

Short video of a key getting stuck in the handcuff: https://www.youtube.com/watch?v=pJKBx...

Video on the techwg channel that shows ways to try and get out of the handcuffs and try to get your key out safely: https://www.youtube.com/watch?v=rHNpf...

Kyung Chang handcuffs are very nice, however please do be careful if you end up using different keys in them... The keys they come with are perfect and you have nothing to worry about, but do not be the person on a 999 or 911 recording asking for help because you got trapped in handcuffs using an ill-suited key! That kind of video would go public, be shared and stay with you forever and everyone would know. Not a good image!

Enjoy!

Brifield C2 High Security Handcuffs [NIJ] 3 Separated Pawls, Special Keys!

These are a pair of light weight High Security handcuffs from Brifield model C2. They are good & secure but quality control could be better. From Amazon UK.

These have 3 pawl bars which are separated, in the same way the old Yuil handcuffs used to have 2 separated pawls. This means you must use their special key which is a 3-bitted key. You get 2 keys with each pair of cuffs.

The keys are all solid, unlike most handcuff keys which are hollow. There is no keypost in these, so the keyway goes through both sides to allow key usage from either side.

One side did back-load but this is either a defect which made it happen on one cuff when it is not a feature, or a defect causing one side to not backload.

The edges are not smooth and are a bit uncomfortable, similar to a pair of Alcyon I had a while back.

One thing I pointed out (I pointed downwards) was about the anti-shim protection. If you recall, Yuil handcuffs have two little flaps which are folded over to catch even special split pawls. In these Brifield handcuffs those flaps exist also but are standing up and not folded over, so the way they come from the manufacturer they are useless at adding any extra protection. Maybe they could be bent over by the buyer but I have not done this in case there are issues which made them not do this on purpose.

Over all, I like them, but the quality issues in my case would be a problem for me if I were to desire to use them in a professional setting. They are likely Chinese since I have seen similar models on Chinese marketplace websites. In fact I have since confirmed with the seller that they are Chinese police handcuffs.

They are made with aluminium, so do not lubricate with graphite because graphite and aluminium do not mix well.

Yuil M-09 K Light Weight Silicone Lined Higher Security Handcuffs

From http://thehandcuffshop.com/

These are the Yuil M-09 K Light Weight Silicone Lined Higher Security Handcuffs. They have higher security from raw picking and shimming than most handcuffs and they have a special silicone lining which is described by Yuil as protecting human rights by helping to prevent injury.

Normal handcuff keys work with these handcuffs. The picture on the site, I suppose shows a previous design because I was hoping to receive the angled keyway which only works with Yuil high security keys. As it stands I have had contact with several suppliers of Yuil who have confirmed that standards have gone down.

Police and military should be searching people for keys any way when they arrest someone, so the fact that actual picking is made more complicated, regular shimming impossible and special shimming more difficult due to the design of these cuffs still makes them more secure than most handcuffs.

These are Korean and are of good quality and strength. I just wish they did not skimp slightly on the mechanism because I believe the older models had a slight advantage since only Yuil keys with the split-bit would work with them.

🚨 Hiatt Model 3103 lightweight handcuffs [NIJ]

This is an old lightweight model of Hiatt handcuffs, model 3103. Bought cheap off eBay, used, ex-police with serial numbers intact.

Not too bad. I never had a lightweight pair of Hiatt so I was curious to give them a try and see what they are like. They are an aluminium or aluminum alloy but are very strong and according to the information I have seen, are also NIJ certified as you would expect from Hiatt handcuffs.

Peerless 730 (730C) Superlite Aluminium US Police Handcuffs [NIJ]

These Peerless 730 Superlite, are exactly that. SUPER light weight. They feel like toys, if it weren't for the cold feel of the metal.

These are very string, NIJ certified handcuffs which are used by US police personnel who want to lighten the load on their duty belts. I have seen forums where officers have swapped from carrying one pair of heavy handcuffs and instead carry 2 pairs of these due to their very low weight. They weigh 147 grams if I recall correctly, even lighter than the last Yuil handcuffs I overviewed.

These scream high quality from every angle. The finish is a nice grey matt (can come in black finish too). The fit and tolerances are perfect.

I would highly recommend these handcuffs if weight is an issue and you still need strong high quality chain-link handcuffs.