... ,Natural rubber 3,Valve: TR13 4,Weight:400g natural rubber inner tube 1,Model size :400-82,Material : natural rubber 3,Valve ... CHINA , we can produce motorcycle tyre ,motorcycle tubeless tyre ,motorcycle inner tube ( natural rubber or butyl ) , If you have the specific requirement ... us , We can produce the specific goods ,just for you !inner tube (natural rubber or butyl) Valve:TR13 350-6,350-7 ...