The DEWALT DW8062A 4-1/2" X .045 X 7/8" Aluminum Oxide A60N Cutting Wheel allows for fast material removal without loading. Features high performance and long life. Specifically designed to be used on aluminum and other non-ferrous materials. 4-1/2" diameter, .045" thickness, 7/8" arbor, A60N Grit. Max RPM 13,200.