Our ARTICONA brand delivers high-quality and reliable IT products at a price that won't blow the budget to boost workplace efficiency. The ARTICONA Nano Masterkey lock protects your notebook from theft at the workplace. Incl. 2 keys for each individual lock. Includes a master key for all locks. Please note: Master key cannot be reordered. The diameter of the lock head is 11 mm. Includes: 25 locks, 1 master key