CONSTANT PITCH TYPE; METAL, NON-METAL, FERROUS METAL CUT MATERIAL; BI-METAL BLADE MATERIAL; 1-3/16 INCH DIAMETER; 285 RPM (MILD STEEL), 145 RPM (STAINLESS STEEL), 190 RPM (CAST IRON), 380 RPM (BRASS), 425 RPM (ALUMINUM) SPEED RATING; V TEETH TYPE