Dear customer, Thank you for choosing our products. If there is any problem with our products, please contact us through the order information. We will be happy to serve you and solve it for you as soon as possible within 12 hours, thank you! The 4 digit combination padlock provides 10000 code combinations and you can set any combination. Compared with 3-digit traditional locks, it is more reliable and safer. The padlock for gym locker is made of high quality zinc alloy, which is strong and durable. The heavy duty padlock combination is weatherproof, resistant to cutting and sawing. There are detailed instructions on the back of the package, please read carefully the instructions of our combination padlock. Easy to set and reset your personal password, once you've set the combination, you're safe and sound. No more fiddly keys. The weatherproof padlocks with code is perfect for indoor and outdoor use. Ideal for gym lockers, school lockers, employee lockers, cabinets, toolboxes, gate, door hasps, garages, sheds, fences, etc.