Description 10 digit push button padlock with 5 preset digits (unchangeable) Uses: garden gates, pool fences, cabinet, gym locker, safety box, suitable for children and the elderly due to ease of use. Easy and quick to open 10-digit padlock with 5-digit locking mechanism. Hardened steel shackle. Each padlock is individually tested at the factory to ensure smooth performance before packaging. Manufacturer locks provide superior security to protect your belongings from theft. This heavy duty combination padlock uses a 10 digit push button system. Hardened steel locking shackle and 5 digit locking mechanism. Rugged die-cast zinc housing. Random preset numbers for each padlock, they cannot be changed. The password of this padlock has been set, and each lock has a unique and permanent password, so we must remind you not to forget its ID card password, 5 preset numbers (unchangeable). Unlock method: (1) Press this number according to your ID card number. (2) Buckle under the lock. (3) The lock buckle opens automatically. Lock method: (1) Press the lock button (2) by return number.