Inner Tube 1.ISO9001:2000 and HQC certificate 2.varies sizes and qualities 3.delivery timely Inner Tubebutyl inner tube,natural inner tube,inner tube,tube,auto inner tube,rubber inner tube, natural rubber inner tube,motorcycle inner tube, bicycle inner tubetensile strength 9-10MPA,7-8MPA,5.5-6.5MPAenlongation 450-500%,400%,350%whole sizesSIZEVALVE1400-20TR179A1200-24TR179A1200-20TR179A V3-04- ...