Utilizing VXB009A050PAB makes it feasible to pull and push items instead of transport Diameter size of the caster wheel has a metric standard 50mm which is equal to 1.969" inch with imperial units. Dimensions of the caster wheel is 30.5mm (1.201" inch). Overall height of the wheel caster is 68mm = 2.677" inch. Mounted via a Top Plate that has the size of 71mm x 54mm and the holes distance of 54mm x 36mm. The weehl core material is Nylon and has a Nylon tire with a low friction Ball bearing. Maximum load calpacity that should not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 220 lb with a Swivel and Upper Brake type. The caster temperature range = -40 to 180 F. Very important notice, you need to buy the VXB009A050PAB in order to get one :).