Special features Cable lock with small size: The adjustable combination lock has a length of approx. 54 cm and can be used as a bicycle lock, motorbike helmet lock, bicycle helmet lock, e-scooter lock, etc. Weighing only 110g, it is easy to carry and lock at any time. High quality material: The helmet lock is made of zinc alloy lock cylinder, nylon and stainless steel. The password wheel is made of ABS material and can be used with good confidence. 3-digit combination lock: The factory default code is 000, you can easily set a personalised password. No key required, simply press to unlock. Installation steps： The factory default code of the combination lock is 000. Press and hold the button and turn the fixing device under the code. Set your own three-digit password Turn the fixing device to save the password. The password setting is then complete