6 Inch Aircraft Extension Drill Bits High Speed Steel (HSS) Surface Treated
6 Inch Aircraft Extension Drill Bits
Ideal for drilling in mild steels where extra length for reach is required. They have a black oxide surface treatment that is abrasion resistant, reduces chip welding and improves chip flow. Manufactured to National Aerospace Standard 907.
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High Speed Steel (HSS), Surface Treated
Manufactured to National Aerospace Standard 907. Made of heat resistant cobalt. 135° split point is self-centering and reduces thrust. Ideal for drilling in mild steels where extra length for reach is required. They have a black oxide surface treatment that is abrasion resistant, reduces chip welding and improves chip flow.
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