Pferd Universal Line PS-FORTE Bench and Pedestal Grinding Wheel, Flat, Series: Universal Line PS-FORTE, 10 in Wheel dia, 1-1/2 in Wheel Thickness, 1-1/4 in Center Hole, 24 Grit, Extra Coarse Grade, Aluminum Oxide Abrasive, 2485 rpm Maximum, Vitrified Bond, Applicable Materials: Steel and All Ferrous Metals, Wheel Type Number: Type 1 Pferd Universal Line PS-Forte 61773 Universal Line PS-Forte Flat Bench and Pedestal Grinding Wheel, 10 in dia x 1-1/2 in Thick, 1-1/4 in Center Hole, 24 Grit