A unique blend of premium NorZon (zirconia alumina) and aluminum oxide grain MSDS Sheet Features: 2X - 3X the life of aluminum oxide wheels Up to 2X faster cutting versus aluminum oxide Application: Cutting sheet metal Cutting pipe Foundry gate/riser removal Metal fabrication Specs: Abrasive Type Cut Off Wheel Diameter 3 in Arbor 3/8" Thickness 0.0350 in Wheel Type Type 1 Grit A60 Material Aluminum Oxide, Zirconia Alumina Specifications A60-0BNA2 Trade Name Norton« RPM [max] 25465