This is a Smith & Wesson known as the 100, model 350122.
Smith & Wesson 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. Smith & Wesson handcuffs meet or exceed demanding U.S. National Institute of Justice tests for workmanship" strength" corrosion and tamper resistance.
Features:
Keyless Double-Locking System for Convenience
Heat-Treated Internal Lockworks
Smooth Ratchets