Standard design Compatible with all standard series handcuffs Made of head treated stainless steel and designed to provide an idefinite period of service Lifetime guarantee The Zak Tool Zak pocket key is designed as a universal pocket handcuff key.table.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }