CONSTANT PITCH TYPE; METAL, NON-METAL, FERROUS METAL CUT MATERIAL; BI-METAL BLADE MATERIAL; 2-3/8 INCH DIAMETER; 140 RPM (MILD STEEL), 70 RPM (STAINLESS STEEL), 95 RPM (CAST IRON), 190 RPM (BRASS), 220 RPM (ALUMINUM) SPEED RATING; V TEETH TYPE