... content 3.Prompt delivery 4.Competive price butyl/natural inner tube 400-8Product DescriptionOur factory is professional in producing motorcycle ... /monthInner tube material: natural rubber/butyl rubberProducts:inner tube,natural rubber tube,butyl rubber tube,tyre,motorcycle tyre,rubber wheel,solid wheel,foaming wheel,rubber ... 300-8,400-8,400-12 etc.2.Motorcycle inner tube size:185-17,200-17,225-17,250- ...