Who said Canada do not sell caster wheel, eh? The VXB009C200BTWFSPUF can move your large heavy object. Spinning on wheel that has 200mm diameter/7.874" inch. The wheel has a width of 50mm x 2mm=1.969" inch. The caster dimensions heightwise is 250mm/9.843" inch. This wheel mounting is Top Plate with the dimensions of 180mm x 145mm Top Plate: 12mm+housing: 10mm and holes distance of 140mm x 105mm. Low drag was achieved by a Cast iron polyurethane core on a Cast iron polyurethane tire spinning freely with a Precision double ball bearing. Maximum load calpacity that could not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 4409 lb with a Fixed type. Ambient temperature range is -40 to 180 F. FYI, you will need to buy the VXB009C200BTWFSPUF in order to get one :).