We can produce all kinds rubber wheels the size is as the below:
6"*2", 200*50, 2.50-4.2.50-6, 3.00-4.3.00-5, 9*3.50-4, 4.10/3.50-4, 3.50-5, 3.50-6, 3.00-8, 3.25/3.00-8, 3.25-8, 3.50-5, 3.50-6, 3.50-7, 3.50-8, 4.00-4, 4.00-5, 4.00-6, 4.80/4.00-8, 5.00-6 6.00-6, 6.50-8 etc.