CONSTANT PITCH TYPE; METAL, NON-METAL, FERROUS METAL CUT MATERIAL; BI-METAL BLADE MATERIAL; 5/8 INCH DIAMETER; 550 RPM (MILD STEEL), 275 RPM (STAINLESS STEEL), 365 RPM (CAST IRON), 730 RPM (BRASS), 825 RPM (ALUMINUM) SPEED RATING; V TEETH TYPE