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 VXB009C300BCPUB. Wheel dia. is 300mm or 11.811" inch in inches. The wheel has a width of 75mm=2.953" inch. The caster dimensions heightwise is 365mm/14.370" inch. Top Plate is the method of installing the caster to your equipment, dimensions are 200mm x 153mm Top Plate: 14mm+housing: 10mm with the holes distance of 160mm x 90mm. Low drag was achieved by a Cast iron polyurethane core on a Cast iron polyurethane tire spinning freely with a Precision double ball bearing. Each caster wheel will carry the load of 3307 lb and is Swivel and Upper Brake type. The Temperature range is -40 to 180 F. FYI, you will need to buy the VXB009C300BCPUB in order to get one :).