Tractor wheels

Dear Sir,
We are an Import / Sales company dealing mostly in the agricultural sector.
We have clients looking for row crop wheels to be used for potato machinery- these being planting, spraying and digging.
As we need to use these wheels on Japanese imported tractors that are not of a normal European sizes, we kindly ask you if you would be in a position to supply us with the following rims that we need for Row crop.
The rims should be made of only the tire placement part (the round part