These came from the YouTuber called CoxysPicks who has a nice lock picking channel, covering various styles of locks including handcuffs. Check his channel out there! These Chubb Detainer or Detainee handcuffs are used in British Prisons. They are model 1K70 and were created with 3 different key bittings depending on their usage location. I have the standard key bitting model. They may be phased out in favour of the TCH HSH1 but it is very possible these are still in use. They use a very good security proper 3 lever Chubb lock which is hard to pick and round chain links that make binding and snapping attacks less likely. They feature both key and switch operated double locking mechanisms and all in all are high security. Normal handcuffs are relatively easy to pick with rudimentary improvised tools, and since these cannot be easily picked, that would explain why they were/are used by the prison service either internally in the prison or during transport between locations (such as between other prisons or court appearances etc. They are reasonably comfortable and not too heavy but they are quite bulky. Really nice handcuffs, with a robust and known secure locking mechanism. They can be picked if you know what you are doing and have the tools, but if you know how to pick normal handcuffs, you will never.... ever... pick these with that knowledge! If you are interested in seeing these picked or opened without a key, check out CoxysPicks youtube channel. Enjoy! Please like, subscribe and share my videos/channel with anyone you think may find these videos interesting ? Thanks ? #handcuffs ... https://www.youtube.com/watch?v=uvKbp-sRZLs

These are Clejuso model 11 German police handcuffs. Mixed opinions on these... They are used by German police forces and according to their site, all over the world. My first thoughts were a nice interesting visual design, which then turned into a feeling that they were cheapo handcuffs. Now I have come to realise there are indeed good as well as bad points on these handcuffs as I will detail. Before we get to the good and bad sections, here's a fun fact: I have tried several brands of handcuff key in these handcuffs. TCH/Hiatt won't fit, Smith & Wesson won't fit, Peerless won't fit. The only keys that I have which fit and operate the handcuffs (aside from the proper Clejuso keys they come with) are ASP and Alcyon. As well as my own special TOOOL specification modified smith & wesson keys, which their very purpose is to be as compatible with the widest array of handcuffs known to man or beast. The Good: • They are comfortable. Not quite as comfortable as Peerless, but they are pretty damn comfortable to wear, of course as long as they are not over-tightened. • The open design has shown me that if you used a handcuff key from another brand that is not tall enough on the bit (the bit does not poke out from the key far enough) which would normally lead to a dead-locked key that is permanently stuck in the lock, with these handcuffs you could likely continue to turn the key and just go around again or remove the key as nothing seems to block it. I tested this by turning one key in the wrong direction and pressing the pawl down, which caused the key to rotate in the opposite direction towards being pulled out easily. • There is a button in order to double lock the handcuffs. It is crucial to double lock handcuffs in order to both prevent easy opening of these handcuffs (especially THESE which you can drive a tank up in there to open them) and also ensure the handcuffs cannot accidentally (or on purpose to blame the arresting officer for abuse) tighten and cause injury to the person who is wearing the handcuffs. • They are made in Germany, so I hope the usual German manufacturing means that they are of sound and strong secure capability. I can only hope, given my findings so far, detailed in the "Bad" section... The bad: • There is no ditch on the rotating arm. The purpose of a ditch is that a protrusion in the body of the cuff slides through it as the cuff is placed on the wrist. If someone is really strong and pulls outwards, without the ditch they may be able to pull the teeth of the cuff out of the internal pawl's teeth and free them self from the handcuffs. The ditch ensures that this force will be shared with the protrusion in the cuff which is lodged into a ditch inside the rotating arm. These handcuffs have no ditch. The only "possible" saving grace is they are chunkier laterally, meaning there is more metal horizontally that the person would need to put force against. Maybe this will help in the absence of the ditch. • There is only 1 pawl bar and it is very thin, meaning they may tolerate less force being put on them, causing the handcuffs to break and allow a strong person to free them self. Maybe. • The pawl tolerances are pretty high, in that there is SO MUCH ROOM at the base of the cuff when placed on a wrist, that you could drive a tank up in there to unlock them if they are not double locked. I shoved a big heavy duty bobby pin or hair grip in there and shimmed the handcuffs open. • The outer sandwiches of metal are somewhat thin. Thin enough that I can pinch hard and bow them closer together. This leads me to believe someone could pry the two sandwiches apart and essentially smash open the handcuff to free them self. • You can tell they are made cheaply because there is a lot of open areas in the handcuff. This lead you see the inside workings (which is interesting) and they only have 1 handcuff mould and use it for both sides. This leads to one key hole facing the front and one facing the back, instead of both holes being on the same side. This is a classic cheap tactic as they do not need to design and separately manufacture a mirrored handcuff bracelet for the other side. Most big name cuffs have a properly mirrored side. These do not. • They smell like gun metal, like an old west toy cap gun I had as a child. Just horrible. Possibly due to the different kind of metal used in the middle of the handcuffs. Thanks for watching. Please like and subscribe! Enjoy Police gear police supplies security equipment police equipment LEO law enforcement German police handcuffs Germany #handcuffs #Clejuso #sbd ... https://www.youtube.com/watch?v=O5wrNH7jj_k

This is the Yuil Con Lock, from Korea. It is a padlock used for transport purposes, to secure belly chains and black boxes. It is a key-retaining padlock that uses normal handcuff keys. It is only locked from one side of the shackle, however seems to use a ball bearing design which would prevent shimming entirely. So it is a pretty high security lock, even though the open end only sits in a whole and is not locked in place from that side. The locking mechanism is securing the shackle from the back side of the shackle which spins in the body of the padlock. It's a nice little padlock and I am happy to have one in my collection. Available from The Handcuff Shop in the UK. ... https://www.youtube.com/watch?v=8Gs8SXUKQnw

Can properly tightened or over-tightened TCH 840 cuffs stop you from getting to keyholes in a stack position? Handcuff spinning... This video is in response to a line of comments on my video "ℹ How to escape TCH840 UK police handcuffs with keyholes backwards!" video, for someone saying if speedcuffs are applied properly in a FRONT stack position, that you cannot spin the cuffs over to gain access to a keyhole... Not content with my word, experience and explanation of the fact TCH rigid cuffs are the large (more round) size making spinning over easy, this video demonstrates me applying a single cuff and then tightening it way too tight and I am still able to spin the cuff over. Sure, it won't swing around by it's self when that tight due to friction but it is easy as can be to spin it around even with that tightness and very easy (and faster) in a front stack as well. You can also see the marks on my wrist to show how tight and how much it was digging into my wrist during this demonstration. I have averagely large hands. When in a stack, these handcuffs can be applied so that one keyhole is toward the back of the hand making it not possible to be accessed and the other hand has the keyhole on the opposite side, so no keyholes are accessible. But with a simple spin of the cuffs, the hand at the top of the cuff becomes the bottom hand and now one hand has access to the keyhole. #handcuffs ... https://www.youtube.com/watch?v=qSHatPIRfj4