• Heavy-duty construction made to type J aircraft
• High red hardness of cobalt permits speeds 30% greater than HSS drills

Drillco 500A124 Jobber Length Drill Bit, 500 Series, Heavy-Duty, Fractional Drill Size: 3/8 Inch, Point Angle: 135 deg, Point Type: Split, Cobalt, Grade: M-42, Gold, Flute Length: 3-5/8 Inch, Shank Type: Straight, Shank Diameter: 3/8 Inch, Shank Length: 1-3/8 Inch, Overall Length: 5 Inch