Impact duty titanium drill bits with red helix are engineered for impacts and drills. Designed with a variable helix with an aggressive 35 degree helix angle which ends at 15 degrees. Provide Rapid chip removal to limit heat buildup to stay sharper longer. The 135 degree split point tip delivers a precision start and prevents walking for fast, accurate holes. Titanium coating can be used in all drilling applications to give you a long life of usage. Chip breaker decreases heat buildup.