Our DUTY-GEAR series of key retractors are ideal for law enforcement, security professionals, and hotel and casino workers responsible for the security and management of keys and access control. The protective case not only silences the keys but also prevents theft and "peeping" -- a standard theft practice where a high resolution photo is taken to duplicate the keys. This key silencer comes in two versions: KK2 Key-Lock Silencer Specifications Case size: 4-1/2" (11.4 cm) long 2-1/4" (5.7 cm) nylon loop belt attachment for wider law enforcement belts 1-1/4" (3.2 cm) black split ring end fitting on rotating, 90-degree key lock Easily rotate and remove key ring to share Snap-In Silencer Specifications Case size: 4-1/2" (11.4 cm) long 2-1/4" (5.7 cm) nylon loop belt attachment for wider law enforcement belts 1-1/4" (3.2 cm) black split ring end fitting Snap in key ring for security; unsnap to share New and improved Leather Loop provides additional strength over previous nylon belt loop. Key silencer case wraps completely around and closes with hook and loop to secure your keys.