Imagine your office chair has no wheel caster, you would be carrying it right and left, install 6inch-Swivel-Caster-008 instead. This wheel caster has a wheel diameter of 150mm or 5.906" inch in inches. The thickness of the wheel is 50mm or 1.969" inch. The caster dimensions heightwise is 195mm/7.677" inch. Mounted via a Top Plate that has the size of 100mm x 115mm and the holes distance of 75mm x 85mm. The Double ball beaing design will enable the Polyvinyl Chloride tire to roll easily with a core made of Polyvinyl Chloride. Each caster will carry the load of 617 lb and is Swivel type. Last and not least the temperature range = -40 to 180 F. Enjoy our 6inch-Swivel-Caster-008, we wish all the best in your project.