CONSTANT PITCH TYPE; METAL, NON-METAL, FERROUS METAL CUT MATERIAL; BI-METAL BLADE MATERIAL; 2-7/8 INCH DIAMETER; 120 RPM (MILD STEEL), 60 RPM (STAINLESS STEEL), 80 RPM (CAST IRON), 160 RPM (BRASS), 180 RPM (ALUMINUM) SPEED RATING; V TEETH TYPE