Russian Thumb Cuffs
Zinc plated steel thumbcuffs from Russia. Large thumbcuffs with an unusual shape. Both sides open simultaneously by turning key once. A single double lock pin at top activates double locks with end of key. Both single and double locks release by turning key one direction. Weigh 4.8 oz. One key included.
Does not work with standard handcuff key.
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Like regular handcuffs except they are one piece that goes on your thumbs. Can be opened with a standard handcuff key, or shimmed open (does not double lock", but I don't know how. They restrict hand movement much more than wrist cuffs.