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 VXB20075HHLRB. Wheel dia. is 75mm or 2.953" inch in inches. The wheel has a width of 75mm=2.953" inch. The caster dimensions heightwise is 95mm/3.740" inch. Mounted via a that has a size of 60mm x 60mm and the holes distance of 129mm x 74mm. The weehl core material is Polyurethane and has a Polyurethane tire with a low friction Roller bearing. Each caster wheel will carry the load of 99 lb and is Swivel and Upper Brake type. The Temperature range is -40 to 180 F. FYI, you will need to buy the VXB20075HHLRB in order to get one :).