VARIABLE PITCH TYPE; 4-1/2 INCH PILOT DRILL LENGTH; STEEL, TIN, ALUMINUM, FIBERGLASS, WOOD, PLASTIC CUT MATERIAL; BI-METAL BLADE MATERIAL; 3-1/4 INCH DIAMETER; 1-1/2 INCH CUTTING DEPTH; 1/4 INCH PILOT DRILL DIAMETER; 7/16 INCH, 5/8 INCH ARBOR SHANK SIZE