-our production lines are all imported from abroad.All of our machines is new and advanced, they are in good conditions.So we can guarantee the quality of our products, which are suitable for bus, heavy truck. -now we can supply you with wide range sizes of truck wheels, fit with excellently quality.All the parameters can be changed as your required. Tubeless wheel size: 11.75x22.5 9.75x22.5 9.00x22.5 8.25x24.5 8.25x22.5 8.25x19.5 7.50x19, 5 6.75x19.5 6.75x17.5 6.00x17.5 5.25x17.5 Tube wheel size: 8.50-24 8.50-20 8.00-20 7.50-20 7.00-20 6.50-20 6.50-16 6.00g-16 5.50f-16 Note: the specification is adjustable. All size of truck steel wheel available. And all the paremeters can be changed as your required. Should you have any questions, pls do not hesitate to let me know.