LockWrite's pen is a writing utensil that features a built-in handcuff key, which provides police officers and prison guards with a safe and efficient way to carry a handcuff key. This tool is designed to appear and function as a standard style ink pen would. The retractable pen notes a clip enabling attachment to a shirt pocket or other location on the person. When extended, the black ink cartridge tip is utilized to double lock the handcuffs. When the ink cartridge is retracted, the end of the pen where the key is located, is used to unlock a pair of handcuffs. The LockWrite pen will fit most styles of standard handcuffs. Replacement Ink Cartridges are available. LockWrite is a clever, discreet, police officer-designed toolofficer that provides of the most necessary functions in law enforcment.