ENKEEO Bike U Lock with Twistable and Corrosion Resistant Cover 10''L x 6.5'' 1 Lock Mount, 2 Reversible Keys, Black 2 KEYS PROVIDED: features 2 wear-resistant and reversible keys for easy to use, a twistable sliver cover for the keyhole against dirt and corrosion HIGHLY SECURE LOCK: comes with an easy locking mechanism while inserting the locking bolt, the antirust and copper key core to prevent the bike from stealing by the thieves LONG LASTING SHACKLE: 0.47/12mm diameter, made of heavy duty hardened steel with protective PVC coating, strong cut resistance and scratch proof to secure the bikes FREE LOCK HOLDER: a plastic lock holder to universally mount on the top tube of any bike makes this lock easy to transportation, and the stiff U-shape is designed for easily fasten around your bike VERSATILE TO USE: simple and portable to use, great for bicycles, gates and fences, or other valuables while locking with little gap left against theft from hammers and chisels