4-Digit Security Padlock: The 4-digit code padlock allows you to set your own code with 10,000 unique options. It is 10 times more secure than a three-digit padlock. Easy to use: Easy to set up or reset by following the instructions always included. Large numbers and side window design make it easy to read. No more bulky keys. Robust construction: Long and sturdy padlock with high strength zinc alloy lock body, hardened steel shackle and excellent lock workmanship. They are weather, rust, cut and saw resistant. WIDE APPLICATION: The long neck padlock is perfect for indoor and outdoor duty, such as door hasp, garage door, shed, fence, shed, container, tool box, locker. Gym locker room, college, school, escape game, closet, closet and more.