SHOCKWAVE IMPACT DUTY Titanium Drill Bit Set (15-Piece)The MILWAUKEE 15 Piece SHOCKWAVE RED HELIX Titanium Drill Bit Set is 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 leading to longer bit life. Designed with a Variable Helix that includes an aggressive 35 helical angle, which ends at 15, these tapered drill bits with RED HELIX provide Rapid Chip Removal limiting heat buildup