• Engineered with cobalt for high heat and abrasion resistance
• 135 deg split-point tip starts drilling immediately and eliminates walking
• Heavy-duty spiral flute design produces faster chip ejection
• Shorter cutting lips reduce torque for drilling in high tensile strength materials

Irwin® Hanson 63128 Jobber Length Drill Bit, Fractional Drill Size: 7/16 Inch, Point Angle: 135 deg, Point Type: Split, Cobalt, Grade: M-35, Gold Oxide, Flute Length: 4-1/16 Inch, Shank Type: Straight, Shank Diameter: 7/16 Inch, Shank Length: 1-4/9 Inch, Overall Length: 5-1/2 Inch