Mounting VXB005100FPF is the Low cost solution of making a project to move around by pushing or pulling. Diameter size of the caster wheel has a metric standard 100mm which is equal to 3.937" inch with imperial units. The wheel has a width of 45mm=1.772" inch. The caster dimensions heightwise is 145mm/5.709" inch. Mounted via a Top Plate that has the size of 100mm x 115mm and the holes distance of 75mm x 85mm. Low drag was achieved by a co-polypropylene core on a co-polypropylene tire spinning freely with a Double ball beaing. Bearing in mind that every caster wheel has the load capacity of 551 lb with a Fixed type. Environment temperature range is -40 to 180 F. Very important notice, you need to buy the VXB005100FPF in order to get one :).