... 3.Rim material:steel,powder coated 4.Superior quality Solid Rubber Wheel 10''x2.5''Wheel choice:While choosing a wheel ... . If steel: powerrd coated, or zinc platedBearing: ball bearing, roller bearing or nylon/steel bushingDetail refers to spare parts (tire ... 20,000 pcs/monthProducts: inner tube,natural rubber tube,butyl rubber tube,tyre,motorcycle tyre,rubber wheel,solid wheel,solid and crumb wheel ...