#1 x 12 Inch Black Oxide High Speed Steel Aircraft Extension Drill Bit

661.029.1 MFG #: F61444
The aircraft extension bits are made from heavy duty construction for drilling holes in hard to reach places. 
  • Features
  • Specifications
  • Ideal for drilling in hard-to-reach areas and for running wires and cable
  • 135° split point ensures a true start and eliminates bit walking
  • For general use in wood, metal and plastic
  • Black oxide coating resists corrosion
  • Made in USA 




  • Diameter: .228 Inch
  • Drive Size: #1
  • Finish: Black Oxide
  • Flute Length: 2-5/8 Inch
  • Material: High Speed Steel
  • Number of Flutes: 2
  • Overall Length: 12 Inch
  • Point Angle: 135 Degree Split
  • Shank Size: #1