Over the years, the original Smith and Wesson Model 100 series handcuffs have become a standard equipment for many police and correctional agencies . Smith and Wesson handcuffs are fabricated from the finest quality carbon or stainless steel. Their handcuffs are made with heat treated internal lockworks, featuring smooth ratchets for swift cuffing and double locks to prevent tampering. Smith and Wesson handcuffs meet or exceed demanding US National Institute of Justice tests for worksmanship, strength, corrosion, and tamper resistance. From the original Smith and Wesson Model 100 series handcuffs to the invariable durability of their restraint chains and leg irons, Smith and Wesson is a proven leader in handcuff and restraint production. Two free handcuff keys included.