eSTUFF Security Lock GLB220101-M Master-Keyed Cable for K-Slot DevicesGearlab Master keyed Security Lock with keys for Kensington Security Slot (25 pcs pack) (25 locks with keys + 2 master keys) 4. 5mm x 180cm Master keyed Security Lock with keys for K Slot main key (pack of 25) Protect your electronic device in public places such as the office, school or while traveling. The security lock protects your device, personal data and information from theft. It is easy to install and you can securely attach your device to a