Norseman Drill 25840 Screw Machine Length Drill Bit, Type 135, Heavy-Duty, Fractional Drill Size: 1/2 Inch, Point Angle: 135 deg, Point Type: Split, Flute Length: 2-1/4 Inch, Shank Length: 1-1/2 Inch, Overall Length: 3-3/4 Inch