... .Size12".14".16".18"and20".2.Handle barSteel insert and plastic outside3.FrameAluminum,painted, argon welding4.ForkAluminum ,painted5.Head partsSteel,set ... cover12.SpokeCp or ucp13.HubCp or ucp14.Brake leverSteel15.PedalPlastic baby pedals,with reflector,without ball16.SaddleLeather17.FreewheelSingle freewheel , 18T-16T18 ...