They make it difficult for bike thieves. With the right bike lock, you can secure your bicycle against theft. The spiral cable lock is very flexible and can be quickly attached to fences, lamp posts, traffic signs, or other bicycles. The plastic coating protects the paint surface from scratches and other damage. Due to its spiral shape, the Fischer lock is particularly space-saving and easy to transport. The 4-digit number wheel offers up to 10,000 different number combinations.