Imagine your office chair has no wheel caster, you would be carrying it right and left, install 4inch-Caster-041 instead. This wheel caster has a wheel diameter of 100mm or 3.937" inch in inches. The wheel has a width of 50mm=1.969" inch. The caster dimensions heightwise is 142mm/5.591" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 115mm x 100mm x 5.5mm and holes distance of 72mm x 85mm. Rolling with a wheel core material of Cast Iron and a Cast Iron tire rolled over Roller bearing. Bearing in mind that every caster wheel has the load capacity of 551 lb with a Fixed type. The temperature range is -40 to 180 F. Buy the 4inch-Caster-041 now, just add the quantity to basket and click on Checkout.