Easy to use: 4-digit code combinations dialed for extra security, allowing you to set your own combination code. The lock offers 10,000 hard-to-decipher combinations. The original combination number is0-0-0-0. Hardening treatment: the lock hook is hardened, resistant to shearing and sawing, and the chrome-plated outer layer, shiny and wear-resistant, prevents third parties from intentionally destroying the lock body. Widely used: Suitable for lockers, chests, cabinets, tool boxes, lockers, etc. Schools and employees. Suitable for indoor and outdoor use Eco-friendly and durable: Made of zinc alloy, coated with environmentally friendly paint to prevent rusting and fading, suitable for long-term use. Available in four colors. Color: Black High Security: This cryptographic 4-bit lock allows 100,000 combinations. It offers increased security and solutions to protect your assets. HIGH QUALITY MATERIALS: This padlock is made of zinc alloy, metal body, high strength locking mechanism and hardened steel hook to resist wear and prevent oxidation for long lasting durability. Easy to configure: easy to reconfigure, unlock the padlock with the original password, turn the change knob to change the password and replace it. This way you avoid losing or forgetting your keys. Easy to carry: lightweight, suitable for indoor and outdoor use, does not take up space. Widely Used: This lock applies to sports locker, school locker, chest, gym bag and tool box. You can use it to lock your bag or luggage during your trip.