Our ARTICONA brand delivers high-quality and reliable IT products at a price that won't blow the budget to boost workplace efficiency. Incl. 2 keys for each individual lock. Includes a master key for all locks. When re-ordering, the customer receives the same set again - same locking system and same master key. Users can set their own combination. There is no master code. The lock can be opened with the key or combination. Please note: Master key cannot be reordered. The diameter of the lock head is 18 mm. Includes: 25 locks, 1 master key