Steel U-Lock Bike & Motorcycle Lock - Weighs Just 10 Oz Popular U-lock style bike lock with reduced-weight design - weighs just 10 oz Fastest way to lock/unlock bike with no combination to forget; includes two keys Strong 3/8" steel shackle with scratch-preventing PVC jacket Inside dimensions 3-1/2"W x 6-1/2" length will immobilize most bikes and motorcycles Assorted colors - item color may vary from one pictured