By using the 4 digit combination lock, it helps you to protect your precious bike from stealing. They can not only protect your bike but also can be applied to other objects, such as motorcycles, scooters, skateboards and so on. Designed with many excellent characteristics, such as rust-proof, corrosion-resistance, heat-resistance, high durability and sturdy, these anti-theft bicycle locks can be used for a long period of time. It is made of high-quality zinc alloy and PVC material. The initial password is 0000. The length of this product is 15cm and width is 13cm. This product is perfectly suitable for mountain bike, road bike, MTB and so on. Item Name: Bicycle Lock Material: Zinc Alloy, PVC Features: High Durability, Long Lasting, Rust-proof Size Details: 15cm x 13cm/5.91" x 5.12" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. How to Set: 1. Initial password alignment arrow. 2. Rotate the lock. 3. Turn the character wheel to set the password you want. 4. Turn the lock back to its original position and the password is set. Package Includes: 1 x Bicycle Lock