1、3-digit password design, 1000 sets of password combinations. 2、Constructed with high quality zinc alloy for long service life and easy installation. 3、Suitable for letter boxes, lockers, shoe cabinets, staff cabinets, lockers, wooden cabinets, etc. 4、There is a password change hole under the lock. In the open state, use a stick to top the hole, do not release it, then change the password and release it after completion. 5、This lock does not require a key, so you don't have to worry about losing the key. 1 x Mechanical Code Lock Condition: 100% Brand NewItem Type: Mechanical Code LockMaterial: Zinc AlloyOptional Color: Gold, Cyan, Black RutheniumOptional Thread Length: Approx. 20mm/ 0.79in, 30mm/ 1.18inApplication: L=20mm. Approx. for 0.5-12mm/ 0.02- 0.47in Cabinet ThicknessL=30mm. Approx. for 19-23mm/ 0.75- 0.9in Cabinet ThicknessPassword: 3 Digits 1000 Group Password CombinationInitial Password: 000Scope of Application: Mail Box, Locker, Shoe Cabinet, Staff Cabinet, Locker, Wooden Cabinet, Etc