The Irwin Aircraft Extension Drill Bit provides 6" of cutting reach for drilling through deep or stacked materials. The high speed steel construction handles wood, metal, and plastic. The 135-degree split point tip starts on contact without walking, even on curved or angled surfaces, eliminating the need for a center punch.

• 6" overall length for drilling through deep or stacked materials
• High speed steel (HSS) construction for wood, metal, and plastic
• 135-degree split point tip starts on contact without walking
• Precision-ground flutes for clean chip evacuation
• 3/8" reduced shank fits standard drill chucks