Minimization of possible untoward effects on operator by installing VXB005200PPB1 just ask your operator to push and pull, but not carry. Diameter size of the caster wheel has a metric standard 200mm which is equal to 7.874" inch with imperial units. The thickness of the wheel is 45mm or 1.772" inch. The Caster with the wheel from end to end is 240mm = 9.449" inch. Mounted via a Top Plate that has the size of 115mm x 110mm x 6mm and the holes distance of 72mm x 85mm. The Double ball beaing design will enable the Polypropylene tire to roll easily with a core made of Polypropylene. Bearing in mind that every caster wheel has the load capacity of 1543 lb with a Side Brake type. Environment temperature range is -40 to 180 F. Very important notice, you need to buy the VXB005200PPB1 in order to get one :).