1Superior zinc alloy material is sturdy and durable in use. 23-digit password design provides you much convenience for you to install. 3Applicable to mail box, wardrobe, shoe cabinet, staff cabinet, locker, wooden cabinet, etc. 4This lock does not require a key, to avoid the trouble of losing the key successfully. 5There is a password change hole under the lock. In the open state, use a stick to top the hole without releasing it, and change the password. You can release it after completion and disturb these numbers when achieve lock. 2 x 3-Digit Password Lock Condition: 100% brand newItem Type: 3-Digit password lockMaterial: Zinc alloyMain Color: Black Optional Thread Length: 30mm/ 1.18in, 20mm/ 0.79inL=20mm suitable for 0.5-12mm/ 0.02- 0.47in cabinet thicknessL=30mm suitable for 19-23mm/ 0.75- 0.91in cabinet thicknesPassword: 3 Digits, 1000 combination of passwordsInitial Password: 000Scope of Application: Suitable for mail box, wardrobe, shoe cabinet, staff cabinet, locker, wooden cabinet, etc