Tens of thousands of different kinds to select from to have your office Desk/chair sliding easily right and left, install the VXB013125WBCPUF. The wheel diameter is 125mm or 4.921" inch in inches. The thickness of the wheel is 50mm or 1.969" inch. The caster dimensions heightwise is 210mm/8.268" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 140mm x 108mm and holes distance of 105mm x 75mm. Low drag was achieved by a Polyurethane and Cast iron core core on a Polyurethane and Cast iron core tire spinning freely with a Ball bearing. Maximum load calpacity that should not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 617 lb with a Fixed type. Temperature range is -40 to 180 F. Buy our VXB013125WBCPUF, we wish all the best.