1.High content Rubber wheel 2.Weight:4kg at lest 3.Air,foam,solid wheels 4.With ... ;5.Hole diameter:as your size.6.Weight 4kg at lest.rubber wheel /pneumatic rubber wheel/pneumatic wheel 10''x3.50-4,16''x4 ... -8,8''x2.50-4,3.50-8solid wheel /rubber solid wheel/solid rubber wheel 13''x3'',10''x2.5",8"x2.2 ... ",8"x1.75",6"x1.5"PU wheel/foam wheel/pu foam wheel 3.50-4,3.00-8,4.80 ...