CONSTANT PITCH TYPE; METAL, NON-METAL, FERROUS METAL CUT MATERIAL; BI-METAL BLADE MATERIAL; 13/16 INCH DIAMETER; 425 RPM (MILD STEEL), 210 RPM (STAINLESS STEEL), 280 RPM (CAST IRON), 560 RPM (BRASS), 630 RPM (ALUMINUM) SPEED RATING; V TEETH TYPE