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Impact duty titanium drill bits with Red Helix are engineered for impacts and drills. Designed with a variable Helix with an aggressive 35 Helix angle which ends at 15 . Limits heat build-up to stay sharper longer. The 135 split point tip delivers a precision start and prevents walking for fast, accurate holes. Can be used in all drilling applications to give you up to 3 times the life verses Black Oxide drill bits.