... kinds of bicycle inner tubes, including butyl and natural rubber tube. Bicycle inner tube14x1.75/2.125,16x1.75/2.125,18x1.75/2.125,20x1.75/2.125,22x1.75/2.125 ... -17, 225-17, 200-17, 185-17, 350-16, 325-16, 275-16, 250-16, 225-16, 275-14, 225-14, 300-12, 350-10 ... , 70/90-17, 60/100-17, 80/90-17110/90-16, 130/90-15, 60/90-17(tt/tl), 80/80 ...