About this itemThe Bell Rampage 400 Chain Lock offers the strength of a u-lock with the portability of a cable lock. At 3 feet long, the chain can wrap through the frame and front wheel, securing the most vulnerable points on a bicycle. Heavy?duty 6mm diameter hardened steel links provide meaningful protection against thieves while the woven nylon sleeve prevents damage to a bicycle's paint. An independent lab has rated the security of this lock a 3 on a 5-point scale. Features