Irwin 62120 Hanson 5/16" x 12" Aircraft Extension High Speed Steel Straight Shank Drill Bit
• 5/16" Diameter, High Speed Steel
• Straight Shank
• 12" aircraft extension. 12" overall length
• Used for drilling in hard to reach areas
• 135x split point with heavy duty web
12" Aircraft Extension High Speed Steel Fractional Straight Shank Drill Bits - Ideal for drilling in hard-to-reach areas and for running wires and cable. Bit is constructed of M-2 high speed steel for the best combination of strength, heat resistance, and wear resistance. For general use in wood, metal, and plastic. Black oxide coating resists corrosion. 135 degree split point ensures a true start and eliminates bit walking.