Bike lock is a fusion U-lock designed to keep your property secure. Hardened steel body resists cutting, sawing and prying. Double-locking shackle provides superior pry-resistance while the disc key delivers superior pick-resistance. Vinyl coating makes the lock weather-resistant and scratch-resistant. Bike lock is keyed differently from others of the same model and includes a carrier bracket for convenient storage. Shackle dimensions are 1/2" x 8" x 4".