Security & Keyless --- Topcrown bike chain lock offers high security with a keyless 5-digit combination lock design that's both secure and resettable. With over 100,000 possible combinations, it outperforms the typical 4-digit locks in terms of safety and convenience. Say goodbye to the worries of losing or managing keys
Resetting is Simple --- The initial default password is "00000". To set a new password, just rotate the knob 90° to input your desired code, then return the knob to its initial position. You can now use the new password to unlock it
Sturdy & Durable --- Our bicycle lock is as sturdy as they come, crafted from a 0.24 inch/6 mm thick alloy steel chain and a robust zinc alloy lock core that resist cutting and sawing. This makes it highly durable and secure, providing optimal protection against theft
Scratch-Proof Protection --- Our bike chain lock features a durable, scratch-proof polypropylene fabric cover and a PE plastic lock head for smooth, accurate operation. The dustproof cap keeps the lock hole clear of rainwater and sand
Wide Application --- This bike chain lock is 3.2 feet long and weighs about 1.45 pounds, long enough to lock 2-3 bikes together, or fasten your bike to a tree, gate, fence, rail, or pole. The chain lock also can be used for motorcycles, electric scooters, ebike, skateboards, grills, ladders, doors, lawnmowers and more
Note: The lock head has a diameter of 3.3cm/1.3inch, fitting most bike wheels currently on the market. However, if your scooter, e-bike, or any other item has a wheel gap or hole less than this, the lock may not pass through. In such cases, we recommend wrapping the chain around the item instead of threading it through