Who said Canada do not sell caster wheel, eh? The VXB005200ACPUB1 can move your large heavy object. Wheel dia. is 200mm or 7.874" inch in inches. Sizes of the caster wheel is 50mm (1.969" inch). The caster dimensions heightwise is 243mm/9.567" inch. This wheel mounting is Top Plate with the dimensions of 100mm x 115mm and holes distance of 75mm x 85mm. This caster wheel core made of Iron core and Polyurethane and has a Iron core and Polyurethane tire spinning over Double ball beaing. Having in mind that every caster wheel has the load capacity of 882 lb with a Swivel and Center Brake type. The caster wheel temperature range = -40 to 180 F. FYI, you will need to buy the VXB005200ACPUB1 in order to get one :).