Minimization of possible untoward effects on operator by installing VXB20050BPP2B1 just ask your operator to push and pull, but not carry. Diameter size of the caster wheel has a 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 dimensions heightwise is 60mm/2.362" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 38mm x 38mm and holes distance of 129mm x 74mm. The Roller bearing 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 77 lb with a Swivel and Center Brake type. Temperature range is -40 to 180 F. Very important notice, you need to buy the VXB20050BPP2B1 in order to get one :).