ASP Security Handcuffs incorporate two independent pawls which are separated by a heat treated stainless steel security plate. The divided pawls inhibit shimming while making the cuffs extremely difficult to pick. ASP High Security Handcuffs are available in both steel and ultra light aluminum models. The key for ASP Security Cuffs will open all standard lock sets. However, standard handcuff keys will not unlock ASP Security Handcuffs.