Product details:

OnGuard's PitBull Mini DT is a sturdy U-lock/cable combination that defends your bicycle with 1/2-inch hardened steel, OnGuard's X4 quattro-bolt lock, and a 3/8-inch-diameter cable. This cable is 4-feet long so that you can lock up your wheels, or another bike, with ease. And thanks to the included mounting bracket the PitBull DT can go along for every ride. This lock also comes with five keys, including OnGuard's Microlight key which has a built-in light.