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 VXB009C125BTWFSPUF. Spinning on wheel that has 125mm diameter/4.921" inch. The wheel has a width of 50mm x 2mm=1.969" inch. The Caster with the wheel from end to end is 195mm = 7.677" inch. Mounted via a Top Plate that has a size of 180mm x 145mm Top Plate: 12mm+housing: 10mm and the holes distance of 140mm x 105mm. The Precision double ball bearing design will enable the Cast iron polyurethane tire to roll easily with a core made of Cast iron polyurethane. Maximum load calpacity that could not be exceeded on each wheel, remember to add safety factor, when calculating the load capacity 3307 lb with a Fixed type. The Temperature range is -40 to 180 F. FYI, you will need to buy the VXB009C125BTWFSPUF in order to get one :).