Features1Protect your bike from various methods of thief effectively. 2Made of hard alloy steel with PVC coating. 3Resistant to cutting,breaking,sawing and shearing. 4Equipped with mounting bracket can easily fix on the bike tube(Max. 55mm/2.1in) when you do not need. 5Rotating dust cover prevents corrosion of water, dust and dirt.SpecificationThe Bike U Lock is suitable for bicycle,motorcycle and electric mobile etc.Features:Protect your bike from various methods of thief effectively.Made of hard alloy steel with PVC coating.Resistant to cutting,breaking,sawing and shearing.Equipped with mounting bracket can easily fix on the bike tube(Max. 55mm/2.1in) when you do not need.Rotating dust cover prevents corrosion of water, dust and dirt.Specification:Model:Lock/Cable/Lock Set (optional)Color:Yellow/Red (optional)Material:alloy steel,ABS,PVCMounting bracket:Suitable for tubes up to 55mm/2.1in in diameterPackage weight: Approx. 720g/25.4ozPackage List:1* Lock1* Mounting Bracket2* KeysPackage List1* Lock1* Mounting Bracket2* Keys