2.5 Inch Long Shackle 4 Digit Combination Lock - Zinc Alloy Combo Padlock for School Gym Locker,Backyard Gate, Fence, Toolbox, Case, Storage (2 Pack).This is great to have on hands all the time.I like to use these on my fence door i my backyard.So there is no need to carry a key all the time , you just need to remember the combination numbers and you are good to go.The locks are well made and sturdy.This is great for school lockers, gym lockers, toolbox, case, storage packs etc.Easy to set and reset your own 4-digit combination for keyless convenience.4-digit offers 10,000 combinations for added security compared with 3-digit.