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Aircraft Extension Drill Bits

  • Industrial Quality High Speed Steel

  • Precision grounded from solid for true, round holes when cutting

  • Vacuum heat-treated to achieve hardness of HRc 64-65

  • 135 degree Split Point prevents and reduces wobbling and "walking"

  • Straight Shank

  • Sold in packs of 6 or 12

aircraft extension drill bit small.jpg
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