ABUS' U-locks offer strength, durability and protection you can count on. The Granit 460 U-Lock boasts a burly 12-mm thick hardened steel shackle and a seriously tough double bolted lock body to keep your bike safe and sound. Its quality ABUS Extra Classe lock cylinder is highly tamper resistant and it's a snap to carry the Granit 460 on your bike with the included bracket. This lock includes two keys.- Dimensions: 4.25 x 9 inches