Imagine your office chair has no wheel caster, you would be carrying it right and left, install 5inch-Swivel-Caster-039 instead. This wheel caster has a wheel diameter of 125mm or 4.921" inch in inches. The wheel has a width of 27mm=1.063" inch. The overall height of the caster is 155mm or 6.102" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 76mm x 76mm and holes distance of 57mm x 57mm. Low drag was achieved by a Polyvinyl Chloride core on a Polyvinyl Chloride tire spinning freely with a Plain bearing. Each caster will carry the load of 132 lb and is Swivel type. Temperature range = -40 to 180 F. Enjoy our 5inch-Swivel-Caster-039, we wish all the best in your project.