Milwaukee? SHOCKWAVE? 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?, the Impact Duty Titanium Drill bits with RED HELIX? provide Rapid Chip Removal? to limit heat buildup to Stay Sharper Longer?. The 135? 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 up to 3X life vs. Black Oxide Drill Bits?.