Minimization of possible untoward effects on operator by installing VXB007050PB1 just ask your operator to push and pull, but not carry. And rolling on wheel that has 50mm diameter/1.969" inch. Dimensions of the caster wheel is 22mm (.866" inch). The Caster with the wheel from end to end is 65mm = 2.559" inch. Mounted via a Top Plate that has the size of 58mm x 48mm and the holes distance of 46mm x 35mm. This caster wheel core material is Plastic and has a Plastic tire spinning over -. Bearing in mind that every caster wheel has the load capacity of 88 lb with a Swivel and Center Brake type. Temperature range is -40 to 180 F. Very important notice, you need to buy the VXB007050PB1 in order to get one :).