Norton« NorZon PlusÖ Reinforced Cut-off Wheels have the fastest initial cut of any wheel because of a combination of patented Norton SG« (ceramic alumina) and NorZon« (zirconia alumina) grains. That translates to the highest productivity of any wheel. The highly advanced bonding systems makes a free, cool cut and state-of-the-art manufacturing leads to superior wheel balance. MSDS Sheet Features: Patented Norton SG« (ceramic alumina) and NorZon« (zirconia alumina) grain combination Highly advanced new bond system. State-of-the-art manufacturing process. Up to 3X life versus aluminum oxide wheels on carbon steel, stainless and cast iron 40% faster cut rate versus standard aluminum oxide wheels Application: Notching pipe. Cutting sheet metal. Cutting pipe. Foundry gate/riser removal. Metal plate dimensioning. Specs: Abrasive Type Cut Off Wheel Diameter 3 in Arbor 3/8" Thickness 0.0350 in Wheel Type Type 1 Material Aluminum Oxide, Ceramic Trade Name NORZON PLUSÖ RPM [max] 25465