we are a factory,Currently our model quipment and the tube blending machine,etc are the most advanced here. PU Foam Wheel 3.50-4 We are Qingdao Jin Qi Feng Rubber Products Co.,Ltd, a professional manuafcturer in China,specilizes in the producing of wheels,as pu wheel,air wheel,solid wheel.1.Name:PU Foam Wheel2.Dimension:PU Foam Wheel 3.50-43.Rim material:plastic or metal PU Foam Wheel 3.50-4