Master Lock 8175DSG U-Lock, 7-3/8 x 8-Inch Keyed U-shape lock for bicycles and motorcycles Covered body and shackle prevents scratching Hardened steel shackle resists cutting and sawing Includes carrier bracket for storage convenience 7-3/8-by-8-inch keyed; 4-1/2-inch width, 8-inch shackle; 2-year limited warranty