NATURAL INNER TUBESSPEC.N.WEIGHT7*13/4TR87100G10*350-4TR13180GTR87190G325/300-8TR1230G英式嘴230G14*350-8TR13270GTR87270G16*400-8常规TR13370GTR87370G16*400-8高含胶量TR87420G400-8，斜纹，窄模，高含胶量大长嘴350G350-10斜纹高含胶量TR87350GBUTYL INNER TUBESSPEC.N.WEIGHT155/165-13TR13660G175/185-14TR13800G300-17(motor inner tube）TR4**300-18(motor inner tube）TR4**410-18（trail bike inner tube）TR4**