Cable locks are security devices made of a flexible steel cable that is often coated with plastic to prevent scratches. They are commonly used to secure bicycles, outdoor equipment, and other valuables. The cable is typically looped through the item being secured and then locked with a key or combination mechanism, making it difficult for thieves to steal. These locks come in various lengths and thicknesses, allowing users to choose one that best fits their needs. While cable locks provide a moderate level of security, they are generally considered less secure than U-locks or chain locks, as they can be cut with the right tools.