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Your cart is empty.Drill America Cobalt Aircraft Extension Drills are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys. Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools. Drill America Aircraft Extension Drills are manufactured to National Aerospace Standard 907. The 135° split point is self-centering and reduces thrust. Sizes smaller than 1/16 in. have the 118° standard point. Drill America Aircraft Extension Drills are available in 6 in. and 12 in. overall lengths when extra reach is required.
Scott
Reviewed in the United States on February 20, 2025
This was not the size advertised, it came in much smaller diameter. Unsure of real size but will not work for my needs. Not worth the time to return.
charles
Reviewed in the United States on February 20, 2024
so far good drill bit. good length, good quality, good price.
Ana Milena Parra
Reviewed in the United States on July 10, 2023
I needed this, price is great exactly the length I needed!
Jeremiah
Reviewed in the United States on June 1, 2023
Didn't break
eric b.
Reviewed in the United States on November 4, 2023
I love Cobalt drills
Kahoe Fernandes
Reviewed in the United States on August 3, 2022
Promising and beautiful product but lasted only enough for 4 holes out of 40 I needed
ITPhoenix
Reviewed in the United States on March 12, 2022
Straight and sharp.
Customer
Reviewed in the United States on May 12, 2020
This drill bit is and was perfect for my needs. I have more of the same project to build and this drill bit will come in real handy. Thank you seller so much for having what I needed.
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