Imagine your office chair has no wheel caster, you would be carrying it right and left, install 5inch-Swivel-Caster-005 instead. This wheel caster has a wheel diameter of 125mm or 4.921" inch in inches. Dimensions of the caster wheel is 32mm (1.260" inch). The caster dimensions heightwise is 163mm/6.417" inch. Top Plate is the method of installing the caster to your equipment, the dimensions are 95mm x 70mm with the holes distance of 75mm x 52mm. The caster core is made of Polyurethane and has a Polyurethane tire with a low friction Ball bearing. Bearing in mind that every caster wheel has the load capacity of 220 lb with a Swivel type. The temperature range is -40 to 180 F. Enjoy our 5inch-Swivel-Caster-005, we wish all the best in your project.