Minimization of possible untoward effects on operator by installing VXB011125SSPUB1 just ask your operator to push and pull, but not carry. Diameter size of the caster wheel has a metric standard 125mm which is equal to 4.921" inch with imperial units. The thickness of the wheel is 50mm or 1.969" inch. Overall height of the wheel caster is 166mm = 6.535" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 100mm x 115mm and holes distance of 75mm x 85mm. This caster wheel core material is Stainless steel fork and Polyurethane and has a Stainless steel fork and Polyurethane tire spinning over Double ball beaing. Maximum load calpacity that should not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 507 lb with a Swivel type. The caster temperature range = -40 to 180 F. Very important notice, you need to buy the VXB011125SSPUB1 in order to get one :).