Pro Grade High Speed Steel Aircraft Extension Drill Bit Set 6 Inch Long M Shank HSS Black Oxide Finish Extra Long Reach Durable Cutter Great For Precision Holes DWDA C Series Pack Of 12

6-Inch HSS Extension Drill Bit Set with M Shank, 12 Pack
✔️ 6 in long HSS bits with M shank, black oxide finish, 12-pack

These high-speed steel drill bits deliver extended reach and precision for drilling in mild steels and other metals. The round shank fits a wide range of toolholding systems and the black oxide finish reduces friction, helping coolant stay near the cutting edge. They meet aerospace standards with a 135-degree split point for self-centering.

✅ High-speed steel drill bits with 6 inch length and M shank
✅ Black oxide finish for lubricity and chip flow
✅ 135-degree split point for self-centering and reduced thrust
✅ National Aerospace Standard 907 compliant, DWDA/C Series
✅ Pack of 12 bits for bulk projects

💡 What is an extended reach high-speed steel drill bit used for in metalworking?

Extended reach bits are handy when you need to drill deep holes or access tight pockets in metalworking projects.

- extended reach drill bit for deep hole drilling in metalworking - M shank compatibility with standard toolholders - black oxide coated HSS for wear resistance and lubricity - National Aerospace Standard 907 compliant (DWDA/C Series) for aerospace work✝️