Natural rubber and butyl motorcycle inner tube:
1.85-17, 2.00-17, 2.25-16, 2.25-17, 2.50-14, 2.50-16, 2.50-17, 2.50-18, 2.75-10, 2.75-14, 2.75-16, 2.75-17, 2.75-18, 2.75-21, 3.00-8, 3.00-10, 3.00-12, 3.00-14, 3.00-16, 3.00-17, 3.00-18, 3.00-19, 3.25-10, 3.25-16, 3.25-18, 3.50-7, 3.50-8, 3.50-10, 3.50-16, 3.50-18, 3.75-10, 3.75-19, 4.00-8, 4.00-10, 4.00-12, 4.10-18, 4.50-12 4.50-16, 4.50-18, 80/90-17, 90/90-18, 110/90-16, 130/90-15 etc.
Main market is Nigeria, Thailand, Pakistan...