Who said Canada do not sell caster wheel, eh? The VXB005200CPU can move your large heavy object. Spinning on wheel that has 200mm diameter/7.874" inch. The wheel has a width of 50mm=1.969" inch. The height of the wheel caster is 241mm = 9.488" inch. This wheel mounting is Top Plate with the dimensions of 100mm x 115mm and holes distance of 75mm x 85mm. Low drag was achieved by a Iron core and Polyurethane core on a Iron core and Polyurethane tire spinning freely with a Double ball beaing. Each caster wheel will carry the load of 838 lb and is Swivel type. The caster wheel temperature range = -40 to 180 F. FYI, you will need to buy the VXB005200CPU in order to get one :).