Smith and Wesson Handcuffs
These handcuffs use the slot lock double locking mechanism, to double lock these handcuffs insert the double lock pin on your handcuff key into the double lock slot and pull down towards the keyhole. Double locking handcuffs makes them harder to shim, it also prevents the handcuffs from being further tightened. When double locked, handcuffs cannot be tightened or picked. Includes two handcuff keys, Smith & Wesson's lifetime warranty and instructions.