Imagine your office chair has no wheel caster, you would be carrying it right and left, install 6inch-Caster-027 instead. Diameter of the caster wheel is a metric standard 150mm that is equal to 5.906" inch with imperial units. The wheel has a width of 50mm=1.969" inch. The Caster with the wheel from end to end is 195mm = 7.677" inch. Top Plate is the method of installing the caster to your equipment, the dimensions are 100mm x 115mm with the holes distance of 75mm x 85mm. The caster core is made of Polyvinyl Chloride and has a Polyvinyl Chloride tire with a low friction Double ball beaing. Bearing in mind that every caster wheel has the load capacity of 617 lb with a Fixed type. Temperature range = -40 to 180 F. Buy the 6inch-Caster-027 now, just add the quantity to basket and click on Checkout.