ASP Ankle Cuffs incorporate the innovative design and construction features that revolutionized the restraint industry. Forged aluminum bodies, forged flat contact bows, replaceable Lock Sets, double sided key way, two sided double locks, one direction single double lock release, matte black type III hardcoat anodizing, stainless steel swivels and chain and spiral pin construction set ASP Ankle cuffs apart from all other available leg restraints.