Scotch-Brite(TM) CPM Wheel, 8 in x 2 in x 3 in 7A CRS, 2 per case, Custom Aggressive, heavy duty wheel for extra tough blending and finishing applications. Convolutely wound on a core. Hard, long lasting 7 density. Abrasive mineral: Coarse grade aluminum oxide. Color: Tan MOS: 4500 RPM