Tens of thousands of different kinds to select from to have your office Desk/chair sliding easily right and left, install the VXB005C200BAPU. Diameter size of the caster wheel has a metric standard 200mm which is equal to 7.874" inch with imperial units. Dimensions of the caster wheel is 50mm (1.969" inch). The Caster with the wheel from end to end is 250mm = 9.843" inch. Mounted via a Top Plate that has the size of 115mm x 100mm x 6mm and the holes distance of 72mm x 85mm. Low drag was achieved by a Aluminium and Polyurethane core on a Aluminium and Polyurethane tire spinning freely with a Double ball beaing. Bearing in mind that every caster wheel has the load capacity of 1543 lb with a Swivel type. Temperature range is -40 to 180 F. Buy our VXB005C200BAPU, we wish all the best.