... sizes are as follows:1. Forklift wheel rim/Engineering wheel rim:3.00-8, 4.00-9, 4.33-8, 5.00-10 ... -20, 8.00-15, 9.00-15, 9.75-15, 10.00-20, 11.00-15, 11.00-20,etc 2.Tractor/Agricultural wheel rims:5.50x16 ... .75, etc 4. Light & heavy duty truck wheel rim/Tube wheel rim:5.50-15, 5.50-16, 6.00-16, 6.50 ... me,I will do my best to help. 7.00T-15 wheel rim and lock ring