Feature: * The mounting bracket of the bicycle U-lock can fit any bicycle (mountain bike, road bike, electric bike, folding bike). * In addition, it does not require a key, and you should never worry about losing the key again. * And it is also equipped with a 4-foot-long steel cable, so you have more use. * We only use durable and long-lasting zinc alloy lock cylinders to ensure that this bicycle code lock is more durable, and the included 4-foot cable can be used for your bicycles, motorcycles and doors. Bicycle U-shaped lock * Material: Zinc alloy+PVC shell * Size: 9.84*7.11*1.18 in The package includes * 1 black U-shaped lock * 1 cable lock Installation steps * Install the lock frame on the seat tube. * Fix the bracket with bolts. * Push the lock body into the frame. * Insert the locking beam into the lock body to complete the setting.