4-DIAL COMBINATION - 4-digit offers 10, 000 unique combinations, it is 10 times harder to crack than a 3-digit, providing 10 times more security for your locker/luggage/valuables. With lock, you don't have to worry about anything when you go out, this hevy duty lock will keep your possessions always secure. UNBREAKABLE, UNCUTTABLE AND WATERPROOF - All metal-made construction! Lock body is made of aluminum alloy and the lock beam is made of stainless steel for superior cut resistance, durable and corrosion resistant. Solid metal code wheel offering extra resistance to cutting and sawing. Moreover, the premium material is waterproof and anti-rust, making it very good for outdoor use. MULTIPLE USAGE - It can be widely used indoor and outdoor. 0.16 inches of shackle diameter, It can thread through all standard sized zippers and lock holes on the market. Universally suitable for gate, gym locker, suitcase, gun case, backpack, laptop bag and etc. EASY TO USE - No keys needed. Resetting your own combination is simple and straight forward. You can follow the instructions to reset. Numbers on combination lock are easy to read and dials are easy to turn, making locking and unlocking in seconds. Colour:black Material:Zinc alloy Size:54 x 23mm Package Contents: 8 x Combination Padlock