This flat 360° Swivel Key is designed for opening all standard hand cuffs on the market( standard issue professional handcuffs). Easy to unlock, you need a cuff key which is so versatile and convenient like this key. The texture design of the cuff key body increases the friction, the user can easily hold the key without sliding it or holding it unstable. Greatly improved the sense of use and security in special moments. Tested for demanding use, the handcuffs key has undergone rigorous testing to ensure it can survive the rigors of prolonged use. And a security unlocking pin attached, in case of an unwanted situation simply use the pin for unlocking. The excellent design of Back Set allows quick positioning of the handcuff keyway. As a result, this key enables the fastest opening of all standard series handcuffs, making it perfect for law enforcement, police, fire agencies, and users of tactical gear. Use stable forging method, made of strong polymer for durability. Novel line shape, good looking and practical at the same time, designed for unlocking all standard series handcuffs. With the detachable keyring, this standard handcuff key can be easily carried on keychain.