4-Digit Security Padlock: ZHEGE 4-digit combination lock allows you to set your own code with 10,000 unique options. It's 10 times more secure than a three-digit lock. EASY TO USE: Setting or resetting is easy by following the instructions that are always included. The large numbers and side window design make it easy to read. No more tedious keys. HEAVY DUTY CONSTRUCTION: Heavy-duty shackle locks come with high-strength zinc alloy bodies, hardened steel shackles, and excellent manship caft. They are weatherproof, rustproof, and resistant to cutting and sawing. WIDE APPLICATION: Long shackle padlocks are perfect for indoor and outdoor tasks such as door hasps, garage doors, sheds, fences, garden sheds, containers, tool boxes, gym lockers, locker rooms, colleges, schools, escape rooms, cabinets, closets, etc.