Minimization of possible untoward effects on operator by installing VXB009A065PA just ask your operator to push and pull, but not carry. The wheel diameter is 65mm or 2.559" inch in inches. The thickness of the wheel is 38.5mm or 1.516" inch. Overall height of the wheel caster is 81mm = 3.189" inch. Mounted via a Top Plate that has the size of 92mm x 65mm and the holes distance of 73mm x 45mm. This caster wheel core material is Nylon and has a Nylon tire spinning over Ball bearing. Bearing in mind that every caster wheel has the load capacity of 331 lb with a Swivel type. Temperature range is -40 to 180 F. Very important notice, you need to buy the VXB009A065PA in order to get one :).