... in the line of motorcycle inner tubes for more than 10 years as a manufacturer and exporter. With annual producing capacity ... , we can offer:1. Main Sizes:250-10, 275-10, 300-10, 300-8, 350-8, 400-8, 225-14, 275-14, 300-14 ... , 350-18, 375-18, 200-19, 275-19, 300-19,400-19, 375-19, 275-19, 275-21, 450-18, 410 ... , 350-16, 300-16, 275-14, 325-17,300-12, 400-10, 350-1080/100-21, 130/80-18, 120/90-18 ...