Secure your cables and dongle adapters to help protect against theft or loss with these security tether cables 20 pack of universal cable tethers are thin and made of strong steel Convenient length 11.81' / 300mm Anti theft cable tethers secure cables and adapters in boardrooms workstations or lobbies Keep the right adapters or cables attached to equipment in meeting rooms or classrooms and lecture halls Easy to install with crimping tool (not included) Black heat shrink covers