【High Security and Resettable】4-digit smart roll-up lock, can set up 10000 different combination codes, factory default password is 0000. 1. Line up the initial password in the place indicated by the 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 rustproof. 【Free Combination】2 bike locks are included and meet all your needs. Each bike 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 bike safety lock has a mini design, is lightweight, can be carried on the back seat, in the frame or in a bag, etc. It is elegant and beautiful and adapts to a beautiful landscape with your bike. Wide Application: Not only used in bicycles/ebikes, but also other outdoor/sports equipment (e.g. scooter, gate, etc.) With regular keyhole and keyhole lubrication, the lasting life of the lock can be extended effectively.