Tens of thousands of different kinds to select from to have your office Desk/chair sliding easily right and left, install the VXB005150APVC. Diameter size of the caster wheel has a metric standard 150mm which is equal to 5.906" inch with imperial units. Dimensions of the caster wheel is 50mm (1.969" inch). Overall height of the wheel caster is 195mm = 7.677" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 100mm x 115mm and holes distance of 75mm x 85mm. The Double ball beaing design will enable the Polyurethane tire to roll easily with a core made of Polyurethane. Each caster will carry the load of 617 lb and is Swivel type. Temperature range is -40 to 180 F. Very important notice, you need to buy the VXB005150APVC in order to get one :).