High Security 5-Digit Cable Lock: With 100,000 different combinations to choose from, the 5-digit design takes more time to "crack the code" and is much more secure than a 4-digit lock. Durable and Waterproof Bike Lock: Our bike lock is made of extra-thick, cut-resistant manganese steel and comes with a protective cable sleeve. The cable lock is approximately 11mm thick, ensuring durability and wear resistance. Keyless Convenience: Just set a simple code to enjoy keyless service, no need to worry about losing or forgetting your keys anymore. Multi-Purpose: Our combination lock is not only suitable for bicycles/motorcycles, but also for skateboards, scooters, strollers, gates, fences, sports equipment and many other things. Resettable - Easy to Use: Please refer to Figure 5 or the instructions to reset your unique code. Step 1: Unlock with the default code "00000". Step 2: Turn the "Reset" knob 90 degrees clockwise to the horizontal position. Step 3: Reset the code according to your own preference. Step 4: After setting a new code, turn the knob counterclockwise to the original position. Step 5: Done.