Make your life easier by moving oversize large objects much much easier using the VXB20050CPUT1 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. This wheel mounting is with the dimensions of 38mm x 38mm and holes distance of 129mm x 74mm. The weehl core material is Nylon and Polyvinyl Chloride and has a Nylon and Polyvinyl Chloride tire with a low friction Roller bearing. 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 type. The Temperature range is -40 to 180 F. FYI, you will need to buy the VXB20050CPUT1 in order to get one :).