Split Pawl Shims work on higher security handcuffs, even the UK TCH style of high security cuffs now being adopted cross the globe. This stainless steel version will be less likely to rust when contained in bracelets or other similar locations.
Ideally suited for all split pawl handcuffs, it can be teased into position providing a fast release when required.
If you carry only one shim, this should be it.