Thousands of different kinds using our Canada based business to select from to have your office Desk/chair sliding easily right and left, install the VXB007075F. Wheel dia. is 75mm or 2.953" inch in inches. The wheel has a width of 21mm=.827" inch. The caster dimensions heightwise is 93mm/3.661" inch. Mounted via a Top Plate that has a size of 65mm x 54mm and the holes distance of 51mm x 38mm. This caster wheel core made of Rubber and has a Rubber tire spinning over Delrin bearing. Having in mind that every caster wheel has the load capacity of 88 lb with a Fixed type. The caster wheel temperature range = -40 to 180 F. FYI, you will need to buy the VXB007075F in order to get one :).