Thousands of different kinds using our Canada based business to select from to have your office Desk/chair sliding easily right and left, install the VXB005200BAPUF. Wheel dia. is 200mm or 7.874" inch in inches. The thickness of the wheel is 50mm or 1.969" inch. The height of the wheel caster is 240mm = 9.449" inch. Top Plate is the method of installing the caster to your equipment, dimensions are 115mm x 100mm with the holes distance of 72mm x 85mm. The Double ball beaing design will enable the Aluminum and Polyurethane tire to roll easily with a core made of Aluminum and Polyurethane. Having in mind that every caster wheel has the load capacity of 992 lb with a Fixed type. The Temperature range is -40 to 180 F. FYI, you will need to buy the VXB005200BAPUF in order to get one :).