ASP Chain Handcuffs provide a major advance in both the design and construction of wrist restraints. Frame geometry is the result of extensive computer modeling and simulation analysis. Strength potential has been maximized through use of an interlocking, unitized frame. The cuff structure is forged from high strength stainless steel on custom built, high speed, progressive dies. Each restraint is then overmolded with ordnance grade polymer under 75 tons of pressure. The Lock Assembly is unitized and replaceable. The Two Pawl Lock Set provides increased security through a tamperproof design. A stainless steel divider plate makes it impossible to pick the lock of an ASP cuff which incorporates this Lock Set. The two pawl key will unlock all standard handcuffs. However, standard handcuff keys will not unlock the Two Pawl Lock Set. Replaceable Lock Sets make Tactical Handcuffs the most versatile, durable and repairable handcuffs on the market. The Two Pawl Lock Set provides increased security through its pickproof design. The two pawl key unlocks all standard police handcuffs.