Tuff Bro&reg; Heavy Duty 14mm U Bar Bike Lock Anti-theft Bicycle U Lock with Mount Bracket & 2 Keys 14mm Diameter Steel shackle resists cutting and leverage attacks High security Bent Foot design for serious protection and great value High security, pick and drill resistant disc-style cylinder Includes Mounting Bracket for easy mounting to frame tubing 25mm to 80mm U Bar Size: 7"x 3" inch