Extra Long 1/4" x 12" Black Oxide Aircraft Drill Bit Metal / Wood 135 degree split point drills on contact and prevents walking Extended Length drills in hard to reach spaces Black Oxide coated for greater wear resistance Brand : Ace Parabolic flute design improves chip ejection in metal and wood drilling applications Helix is 31 degrees which minimizes the over aggressiveness of a true parabolic flute
Extra Long 3/8" x 12" Black Oxide Aircraft Drill Bit Metal / Wood 135 degree split point drills on contact and prevents walking Extended Length drills in hard to reach spaces Black Oxide coated for greater wear resistance Brand : Ace Parabolic flute design improves chip ejection in metal and wood drilling applications Helix is 31 degrees which minimizes the over aggressiveness of a true parabolic flute
Extra Long 3/16" x 12" Black Oxide Aircraft Drill Bit Metal / Wood 135 degree split point drills on contact and prevents walking Extended Length drills in hard to reach spaces Black Oxide coated for greater wear resistance Brand : Ace Parabolic flute design improves chip ejection in metal and wood drilling applications Helix is 31 degrees which minimizes the over aggressiveness of a true parabolic flute
Extra Long 7/16" x 12" Black Oxide Aircraft Drill Bit 3/8" Reduced Shank 135 degree split point drills on contact and prevents walking Extended Length drills in hard to reach spaces Black Oxide coated for greater wear resistance Brand : Ace Parabolic flute design improves chip ejection in metal and wood drilling applications Helix is 31 degrees which minimizes the over aggressiveness of a true parabolic flute
For drilling holes in “hard–to–reach” places, especially in aircraft assembly work. The flute length on these drills is the same as a standard jobber drill. These drills are made of a single piece — not to be confused with “extension” drills that are actually a jobber drill welded to a bar of common steel.
Cobalt Aircraft Extension Drills in fractional and wire gauge (number) sizes. These cobalt drills are best suited to drilling hard materials such as stainless sheet stock. NOTE: Fractional-size drills 1/16" to 1/2" and wire gauge sizes #1 to #52 have a 135° split point.
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