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 VXB00512550BNY. Dia. Measured of the caster wheel in metric standard 125mm which is equal to 4.921" inch with imperial units. The wheel has a width of 50mm=1.969" inch. The caster dimensions heightwise is 164mm/6.457" inch. This wheel mounting is Top Plate with the dimensions of 115mm x 110mm x 6mm and holes distance of 72mm x 85mm. Low drag was achieved by a Polyamide (Nylon) core on a Polyamide (Nylon) tire spinning freely with a Double ball beaing. Having in mind that every caster wheel has the load capacity of 1543 lb with a Swivel type. The caster wheel temperature range = -40 to 180 F. Buy the VXB00512550BNY now, we ship on the same day.