1. 3 Digit Combination: 3 digit motorcycle helmet lock can provide up to 1000 different combinations, which make decryption impossible. The bike cable lock is resettable; you can change the combination according to your needs. 2. : The motorcycle helmet lock is made of highstrength 304 steel wire ABS and zinc alloy lock cylinder. The surface of the steel wire is treated with baking paint and covered with ABS plastic, so that the chain and the bicycle are not damaged by friction. Highstrength materials allow the product to work normally under high temperature, and it can also be waterproof, anticorrosion, and anticutting in rainy days. It is a small assistant for and theft. 3. Bicycle Lock: Our helmet lock is light about 100 grams and has a maximum stretch of about 39' (1M), which can be carried in the body pocket. It is very convenient for adults and children to use. 4. Password Setting: step1.The initial password 000 is aligned with the scale line; step2.pinch the button of the lock hook, and press it inward and keep it still; step3.Turn the password wheel to set the desired password and align the tick marks; step4.After the password is set, release the lock beam button.