Features: It is a universal lock 5-digit cipher chain lock. Professional manufacturing, high sensitivity, high reliability. The lock cylinder is fully safe against sawing and drilling. No key, it is very powerful, open with a password. Suitable for motorcycles, electric cars, bicycles, iron sliding doors, glass doors. Unlock: Place five digit passwords in sequence, dial the scales, and then pull them off. The password lock in the factory has been set as the original password, password, please set according to the instructions. Please remember the password, so as not to affect the normal use of your advice. Lock the car in places such as bars. Password lock usage: the original password is 00000, open the lock, there is a knob inside, turn the knob clockwise to the head, and then set a keep in mind the password, set up, and then turn back, it is OK. Specifications: Condition: New Weight: Approx.775g/27.3oz Total locking length: 6*900mm/0.2*35.4in Material: High quality manganese steel chain Color: Black, Red (optional) Package List: 1 * Chain Lock