Minimization of possible untoward effects on operator by installing VXB009C200BTWFSPU 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 50mm x 2mm or 1.969" inch. The Caster with the wheel from end to end is 250mm = 9.843" inch. Mounted via a Top Plate that has the size of 180mm x 145mm Top Plate: 12mm+housing: 10mm and the holes distance of 140mm x 105mm. The Precision double ball bearing design will enable the Cast iron polyurethane tire to roll easily with a core made of Cast iron polyurethane. Maximum load calpacity that should not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 4409 lb with a Swivel type. The caster temperature range = -40 to 180 F. Very important notice, you need to buy the VXB009C200BTWFSPU in order to get one :).