High Security and Resettable:4-digit smart roll-up lock, can set up 10000 different combination codes, factory default password is 0000. 1. Align the initial password in the location indicated by arrow2. Turn the lock as shown in figure.3. Turn the word wheel to set the desired password.4. Return the lock to the starting position, the password is set successfully. High-performance lock:This bicycle cable is made of solid steel. Protective PVC coating prevents scratches and lasts longer. With high strength zinc alloy lock head, sturdy, durable and anti-rust. Free Combination:2 bike locks are included and meet all your needs. Each bicycle lock can be used separately or combined with each other, you can freely combine them into a bigger lock which is infinite and widely used. Easy to carry:The bicycle lock of bike has a mini design, is light, can be carried in the back seat, in the frame or in a bag, etc. It is stylish and beautiful and fits beautiful scenery with your bike. Wide Application: Not only used in bicycles/ebike, but also other outdoor/sports equipment (eg example scooter, gate, etc.) With regular lubrication of the keyhole and keyhole, the life of the lock can be effectively extended.