Imagine your office chair has no wheel caster, you would be carrying it right and left, install 5inch-Swivel-Caster-035 instead. Diameter of the caster wheel is a metric standard 125mm that is equal to 4.921" inch with imperial units. The thickness of the wheel is 50mm or 1.969" inch. The Caster with the wheel from end to end is 167mm = 6.575" 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 Double ball beaing design will enable the Iron core and Polyurethane tire to roll easily with a core made of Iron core and Polyurethane. Here come the maximum load that should be applied on every wheel, remember to add safety factor, when calculating the load capacity 882 lb with a Swivel type. The temperature range is -40 to 180 F. Enjoy our 5inch-Swivel-Caster-035, we wish all the best in your project.