PFERD Universal Line PS-FORTE Bench and Pedestal Grinding Wheel, Flat, 7 in Wheel Diameter, 1 in Wheel Thickness, 1 in Center Hole, 60 Grit, Silicon Carbide Abrasive, 3600 rpm Maximum, Vitrified Bond, Green Wheel, Applicable Materials: Carbide, Non-Ferrous Metals and Masonry, Wheel Type Number: Type 1