CTS Thompson Model 1054 nickel and 1054 black triple hinged handcuffs. Multi-drop bars and teeth. Positive "clickback" backloading system. Hinged handcuffs further restrict movement for added security. Oversized for larger wrists. Inside perimeter: 6.25" minimum, 9" maximum. 2 handcuff keys included. Weigh 13.4 ounces