The bicycle lock plays the role of anti-theft bicycle. There are bicycle locks with different functions in the market. At the beginning of the reform and opening up, many people called for strengthening the safety of bicycle locks. The whole wire rope of this lock is about 1.2 meters. Normally, the wire rope can naturally shrink into a ball. If you need to use it, you can stretch it or roll it into two strands to lock the bike. Because of its long steel wire rope, it can lock the bicycle on the railing post or several bicycles together. Therefore, many people like to use this steel wire lock to lock bicycles.