Our most popular chain handcuff, Smith & Wesson Model 100 Handcuffs are the standard that law enforcement professionals trust. The Smith & Wesson Model 100 Handcuffs are manufactured from the finest quality carbon steel with heat treated internal lockworks. Features smooth ratchets for swift cuffing and double locks to prevent tampering. The Model 100 Handcuffs feature a heat-treated chain for reliable performance. The Smith & Wesson Model 100 Handcuffs have an inner perimeter range of 5¾" -8" and 23 locking positions to fit most wrists. Comes with two handcuff keys and includes Smith & Wesson's lifetime warranty.