we can produce different size motorcycle inner tube ,such as :6.00-12 5.00/5.50-12 4.80-12 4.00/4.50-12 4.00-12 5.00-10 80/100-21 2.75-21 3.75-19 2.25-19 4.10-18 3.50-18 90/90-18 and so on.