Imagine your office chair has no wheel caster, you would be carrying it right and left, install 5inch-Lock-Swivel-Caster-003 instead. This wheel caster has a wheel diameter of 125mm or 4.921" inch in inches. The wheel has a width of 50mm=1.969" inch. The caster dimensions heightwise is 175mm/6.890" 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. Each caster will carry the load of 926 lb and is Swivel and Upper Locking type. Last and not least the temperature range = -40 to 180 F. Buy the 5inch-Lock-Swivel-Caster-003 now, just add the quantity to basket and click on Checkout.