The cable lock is a common bicycle lock that consists of an inner wire rope and an outer protective layer. Steel ropes are usually braided from high-strength steel wires, which are resistant to shear and prying forces. The outer protective layer can be a plastic or rubber material and is used to protect the steel rope from scratches and corrosion. One of the advantages of the steel cable lock is flexibility, the steel cable can be bent and adjusted in length freely, suitable for various bicycles and fixed positions. In addition, the cable lock is relatively lightweight and portable and can be easily put into a backpack or attached to a bicycle.