1.Solid Rubber wheel 2.Manufacturer in Qingdao 3.Air,foam,solid wheels 4.With plastic or steel ... 5.Hole diameter:as your size.rubber wheel /pneumatic rubber wheel/pneumatic wheel6x2,2.50-4,200x50, ... .50-8,4.80/4.00-8solid wheel /rubber solid wheel/solid rubber wheel14"x4",13''x3'',10''x2. ... wheel/pu foam wheel2.50-4,3.50-4,3.00-8,3.50-8,4.80/4.00-8 Trolley Solid ... Rubber Wheel 6x1.5