Effective for drilling on curved surfaces, Milwaukee Thunderbolt Cobalt bits require less effort to drill through stainless steel, high alloy steel and cast iron, and are highly recommended for use with portable drills. Cobalt Red Helix Drill Bit Set for Drill Drivers (23-Piece) (5741) Questions & Answers (174) + Hover Image to Zoom 69 97 Pay 44.97 after 25 OFF your total qualifying purchase upon opening a new card. The 135° split point tip delivers a precision start and prevents walking for fast, accurate holes. The Thunderbolt web features a thicker core than a. A specially designed parabolic flute form clears chips and debris fast to keep the bit cool, while the 3-Flat Secure-Grip™ shank holds the bit firmly in the drill chuck. Milwaukee Thunderbolt Cobalt coated drill bits are designed for extreme durability and long life. The Thunderbolt web features a thicker core than a standard drill bit to provide ultimate strength and protect against side-load breakage. Milwaukee Thunderbolt Cobalt drill bits are designed for extreme durability and long life. The Milwaukee Cobalt drill bits are designed with a VARIABLE HELIX that includes an aggressive 35 Helix Angle which ends at 15. 19.
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