Norton Cut-Off Wheel, Toolroom, Series: OBNA2, 7 in Wheel Dia, 0.035 in Wheel Thickness, 5/8 in Center Hole, 60 Grit, Medium Grade, Aluminum Oxide Abrasive, 8730 rpm Maximum, Resin Bond, Applicable Materials: Aluminum, Cast Iron, Ductile Iron, Ferrous Metals, Gray Iron, Soft Carbon Steel and Tool Steel, Wheel Type Number: Type 1, Wheel Hardness: O, For Use With: Chop Saw and Chop Stroke Machines, Yes Reinforced