High security 4-digit combination lock can be reset with 10,000 unique combinations, which is ten times harder to pick than a 3-digit lock. It's more reliable and safer.Robust construction This zinc alloy padlock with durability offers additional resistance to cutting and sawing, rust protection, weather resistance, small volume and light weight.Ease of use Easily set and reset your personal password. Once you have determined the combination, you are safe and sound. No fiddly keys.Password setting The initial password is 0000. Each combined padlock has clear instructions in the shoulder bag. Setting or redefining your own combination is easy and user-friendly. Not complicated at all.Widely used The resettable combination lock for indoor and outdoor use. You can use it for gym, school, employee sleeper, closet, tool box. You can also use it as a combination lock for outdoor doors, gates, fences, garages, etc.