HEAVY DUTY DOUBLE LOCKING:This high security bike U-lock has strong mechanism that increases holding power and provides extra protection against attacks.The double locking blocks both shackle ends and the highest security disc-style key cylinder is pick and drill resistant.FULL SECURITY PACK:Tough U-lock, 13mm-0.5in pure steel (not counting the outer rubber as others do), heat-treated hardened max-performance steel shacke, resists hand tools, bolt cutters and levarage attacks.As additional security, it includes a very flexible braided steel cable to fix other parts of your bicycle to a fixed point as a security anchor URBAN UR55.OPTIMAL SIZE MORE POLYVALENT:This bicycle anti-theft U lock has been devoleped after a deep market research in cooperation with bicycle specialist pros to provide you the optimal zize in order to be more polyvalent, functional and easy to carry.Exclusive U-locking dimension 80x190mm-7.48x3.14 that you can use alone or in combination of the 120cm-47.2in double looped cable made of 10mm-0.4in braided steel.EASY U-LOCK TRANSPORT:Enjoy carrying properly this great U-lock thanks to the convenient U bracket holder included.A handy U-lock bracket with quick realease button to remove the lock easily.And to protect your bike from scratches and extend the life of your lock, this practical and durable bike lock is fully nylon-rubber coated.RECOGNIZED PRESTIGIOUS BRAND:Keep the thief away.URBAN is a well-known European manufacturer of high security locks for vehicles.If you need help, they are always available to assist you.