Using specialized design concepts and extraordinary construction techniques, ASP is changing the future of handcuff use. An interlocking, unitized frame of high strength stainless steel is forged on custom-built progressive dies. The cuff is then overmolded with ordinance-grade polymers making it stronger, lighter, and more durable. Cuffing a suspect is now easier, more efficient, safer and faster. This unique cuff uses a standard ASP Tactical handcuffhandcuff key. Weighs 9 oz. ASP Handcuffs are a larger style handcuff, therefore will not fit all handcuff cases. J&L Self Defense carries the following handcuff cases that will fit the ASP handcuff: ASP Handcuff Case - 56133 ASP Leather Investigator Handcuff Case - 56134 Bianchi 7317 Boston Leather Quick Release Cuff Strap 5519- SCC Boston Leather Round Handcuff Case 5514 Nylon Cuff Case- NCC.