Make your life easier by moving oversize large objects much much easier using the VXB005200ACPU Wheel Caster. Wheel dia. is 200mm or 7.874" inch in inches. The thickness of the wheel is 50mm or 1.969" inch. The Caster with the wheel from end to end is 243mm = 9.567" inch. Mounted via a Top Plate that has a size of 100mm x 115mm and the 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. Having in mind that every caster wheel has the load capacity of 882 lb with a Swivel+Brake+Fixed type. The caster wheel temperature range = -40 to 180 F. FYI, you will need to buy the VXB005200ACPU in order to get one :).