CONSTANT PITCH TYPE; METAL, NON-METAL, FERROUS METAL CUT MATERIAL; BI-METAL BLADE MATERIAL; 2-1/16 INCH DIAMETER; 165 RPM (MILD STEEL), 80 RPM (STAINLESS STEEL), 110 RPM (CAST IRON), 220 RPM (BRASS), 245 RPM (ALUMINUM) SPEED RATING; V TEETH TYPE