CONSTANT PITCH TYPE; METAL, NON-METAL, FERROUS METAL CUT MATERIAL; BI-METAL BLADE MATERIAL; 1-7/8 INCH DIAMETER; 180 RPM (MILD STEEL), 90 RPM (STAINLESS STEEL), 120 RPM (CAST IRON), 240 RPM (BRASS), 270 RPM (ALUMINUM) SPEED RATING; V TEETH TYPE