A Chain Lock is a type of bicycle lock. It is composed of a flexible "chain" made of traditional chain links or cable, with a secure key or combination padlock that locks the two ends together. A Chain Lock is highly flexible, allowing you to lock your bike to different shaped objects.
Chain Locks vary significantly in price and quality. You can sort the below field by price, and you will typically find that the higher priced locks have a higher security rating (more secure). However, higher security ratings also tend to mean heavier locks and so may not be the best option if you do not require the added protection.