Red Star Locks Scooter & Bicycle U-Lock Red Star Locks U-Lock with heavy-duty 14mm hardened steel shackle for Scooters, Motorcycles, Bicycles & more. Riding scooters and motorcycles is fun, getting them stolen isn't. U-Locks are proven to prevent ride and roll away theft. This 7 x 9.5 U-Lock easily mounts to wheels and frames. 7 Inches x 9.5 Inches (180mm x 245mm) Shackle Thickness: 14mm (16.5mm w/ anti-scratch protective sleeve) Double Locking Mechanism