The SHOCKWAVE RED HELIX Titanium Drill Bits are engineered for extreme durability and long life. The QUAD EDGE tip delivers a precision start and four cutting edges to create smaller chips for faster removal and less heat for longer bit life. The Variable Helix design includes an aggressive 35 degree helical angle, which ends at 15 degree, these titanium drill bits with RED HELIX provide Rapid Chip Removal limiting heat buildup to Stay Sharper Longer. The bits also feature an internal ENHANCED TAPERED WEB that greatly increases their strength, reducing premature breakage. Our titanium drill bits are ideal for various applications, including but not limited to wood, plastics, and metals. MILWAUKEE Red Helix Titanium Drill Bits provide up to 5X life vs. black oxide drill bits. Includes 1 each: 1/8 In., 5/32 In., 3/16 In. and 1/4 In.