Efficient VXB20075GPPT makes it feasible to pull and push items instead of transport Spinning on wheel that has 75mm diameter/2.953" inch. The wheel has a width of 75mm=2.953" inch. The Caster with the wheel from end to end is 100mm = 3.937" inch. Mounted via a that has a size of 47mm x 47mm and the holes distance of 129mm x 74mm. This caster wheel core made of Polypropylene and has a Polypropylene tire spinning over Roller bearing. Maximum load calpacity that could not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 88 lb with a Swivel type. The Temperature range is -40 to 180 F. FYI, you will need to buy the VXB20075GPPT in order to get one :).