· Preset three-digit combination lock for keyless convenience. each padlock has a separated combination.· Indoor padlock is best used as a school gym locker, providing protection and security from theft. Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.· Lock is constructed with a metal body, hardened shackle.· This combination lock is suit for gym&sports locker, school locker, employee, toolbox and so on.· For the first time you open this lock follow instruction from the back of the lock; Take a picuture to save it in your mobile phone or write it down. Then remove the password sheet or wipe it out