VARIABLE PITCH; DIAMETER 4-3/4 INCH; 1-5/8 INCH CUTTING DEPTH; 50 RPM FOR CAST IRON, 75 RPM FOR MILD STEEL, 95 RPM FOR ALUMINUM/BRASS SPEED RATING; STEAM TREATED BI-METAL, M42 COBALT TOOL STEEL BLADE MATERIAL; CUT MATERIAL FERROUS METAL, NON FERROUS METAL, NON METAL; GREENLEE[R] BRAND