Make your life easier by moving oversize large objects much much easier using the VXB20050CPU2 Wheel Caster. Dia. Measured of the caster wheel in metric standard 50mm which is equal to 1.969" inch with imperial units. The wheel has a width of 50mm=1.969" inch. The Caster with the wheel from end to end is 48mm = 1.890" inch. Mounted via a Top Plate that has a size of 38mm x 38mm and the holes distance of 129mm x 74mm. The Roller bearing design will enable the Nylon and Polyvinyl Chloride tire to roll easily with a core made of Nylon and Polyvinyl Chloride. Maximum load calpacity that could not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 55 lb with a Swivel and Upper Brake type. The caster wheel temperature range = -40 to 180 F. FYI, you will need to buy the VXB20050CPU2 in order to get one :).