Material: zinc. Sterling 4 dial zinc padlock. A hard wearing padlock with a number of security features. Hardened steel shackle. Double locking features that provides extra attack resistance. The combination is resettable with 10,000 different possible combinations to chose from and no keys to lose. The shackle is made from hardened steel for extra strength with a double locking feature. Tough corrosion resistant coating. Protects the body of the lock when used outdoors. Length: 55mm, Height: 94mm.