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Surface Treated, HSS, 12 Inches Aircraft Extension Drill Bit, Size: 9, Dec. Equivalent .1960, Flute Length 2-7/16, Overall Length 12 Inches, Premium Grade Steel , Pack of 12
  • High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
  • Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge
  • When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
  • Manufactured to National Aerospace Standard 907
Size#9 x 12"

#9 x 12" HSS Aircraft Extension Drill Bit, Pack of 12, Drill America, D/AA/CX129

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#9 x 12"

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