This is a Smith & Wesson Handcuff known as the 300, model 350095.
Smith & Wesson hinged handcuffs are fabricated from the finest quality steel. They are manufactured with heat treated internal lockworks" featuring smooth ratchets for swift cuffing and double locks to prevent tampering. All Smith & Wesson handcuffs meet or exceed demanding U.S. National Institute of Justice tests for workmanship" strength" corrosion and tamper resistance.
Features:
Smooth Ratchets
Heat Treated Internal Lockworks
Double Locks to Prevent Tampering