Peerless Model 801 Hinged Black Handcuffs The Peerless� Model 801 Hinged Handcuff provides additional restraint by more effectively restricting hand and arm movements. Peerless hinged handcuffs feature all steel construction, spun rivets, machined edges and smooth single strand action. The Model 801 hinged handcuffs have the ability to fold flat for compact storage. It has a 10% larger inside perimeter then the Model 700. The Model 801 has been approved by the National Institute of Justice. Lifetime warranty for manufacturing defects and two keys supplied. -Weight: 12 oz. -Material/Finish: Carbon Steel/Pentrate -Minimum opening: 56 mm/2.2 inches -Minimum inside perimeter: 163 mm/6.4 inches -Maximum inside perimeter: 231 mm/9.1 inches -Maximum overall length: 216 mm/8.5 inches