motorcycle butyl tube the content of butyl rubber is 20%,25%,35%; we are factory; make tube according to requirement; OEM is accepted;
butyl inner tube 28x1.1\/2 with D\/V 1)30% butyl rubber content;2) size :28x1.1/2 with D/V;3) color :different size with D/V,A/V,E/V are available;we can mak
