Check the listing for details. Handcuff Key. Condition: Used. Listed at 9.00 USD. The handcuff key is a specific tool designed to unlock handcuffs in emergency situations. It is essential for law enforcement officers, firefighters, and other public safety professionals to have access to this key for ensuring safety and security in various scenarios. This key is a critical piece of equipment for those working in the police and security industry, as well as for facility maintenance and safety personnel. Its compact size and easy-to-use design make it a valuable tool for professionals requiring quick and efficient access to handcuffs in emergency situations.