SET YOUR OWN COMBINATION: The 4 digit combination padlock takes 10 times longer to crack than a 3 digit lock. You can set your own combination with 10,000 unique choices that you know are more reliable and safer.EASY TO USE: Unique side window design and large numbers bring easy reading. Moreover, ZHENGE combination padlock is equipped with an advanced damping device inside which makes each dial click into place for better accuracy and feel in code alignment. 6-step setting or resetting is simple by following the instructions at the back of package.STURDY CONSTRUCTION: The heavy duty outdoor number padlock comes with high strength zinc alloy lock bodies, hardened steel shackles and superior craftsmanship. They are weather proof, resistance to cutting and sawing. They are designed to be the most durable code padlocks for you.WIDE APPLICATION: The combination padlocks are perfect for both indoor and outdoor use such as gym lockers, school employee lockers, cabinets, pantries, toolboxes, gate & door hasps, garages, sheds, fences and general storage. NOTE: This is a large or medium size number lock (1.73*0.86*3.11 inch, shackle diameter: 6mm), not really fit for zipper holes./EA/