Imagine your office chair has no wheel caster, you would be carrying it right and left, install 5inch-Lock-Caster-005 instead. This wheel caster has a wheel diameter of 125mm or 4.921" inch in inches. Dimensions of the caster wheel is 50mm (1.969" inch). The caster dimensions heightwise is 166mm/6.535" inch. Mounted via a Top Plate that has the size of 100mm x 115mm and the holes distance of 75mm x 85mm. Low drag was achieved by a Rubber core on a Rubber tire spinning freely with a Roller bearing. Bearing in mind that every caster wheel has the load capacity of 507 lb with a Side Locking type. The temperature range is -40 to 180 F. Buy the 5inch-Lock-Caster-005 now, just add the quantity to basket and click on Checkout.