We received a large shipment of Cuff Lock Handcuff Key Padlocks today. The Cuff Lock opens with any standard handcuff key. Brass body with a hardened steel shackle. It can be used for prisoner transport to secure a waist chain to a prisoner. With the Cuff Lock, you do not need separate keys to open padlocks. Your handcuff key opens all restraints and the padlock. Available at Handcuff Warehouse: Cuff Lock Handcuff Key Padlock.