Cobalt Aircraft Extension Drill Bit Set One Half Inch By Twelve Inch Pack Of Six, Tough As Nails GLBCO Series, With 135 Degree Split Point For Minimal Walking And Fast Drilling Through Stainless Steel Inconel Titanium Gold Oxide Finish Round Shank

Cobalt Aircraft Extension Drill Bit Set, 1/2 x 12, Pack 6 ✔️ 135° split point for self-centering, 12 in reach, pack of 6

These cobalt aircraft extension drills are built to tolerate high-tensile metals, giving you extra reach for deep holes in aerospace, stainless steel, inconel, and titanium work where space is tight.

✅ 1/2 in diameter (12.7 mm) with 12 in overall length (304.8 mm) for extended reach
✅ 6-pack in this set for efficient workflow
✅ 135° split point for self-centering and reduced walk
✅ Gold oxide finish (thin oxide) similar to uncoated cobalt tools
✅ Round shank fits a wide range of tool holding systems

💡 What is a cobalt drill bit used for and why choose a 135-degree split point for metal work?

Handy for metalworking in aerospace and manufacturing.

- Handy for drilling stainless steel, inconel, titanium - 135° split point minimizes wandering and starts holes true - Cobalt content provides added hardness and longer life in tough metals ✝️