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#2 1/4" Hex Shank Insert Bit
registers and diffusers offer quality material
Dual carbide grit for greater versatility
Two coils of 1-3/4" nails provided
combo arc fault
Milwaukee Thunderbolt 31/64 In. Black Oxide Drill Bit Electrical Tools #2 1/4" Hex Shank InsertMilwaukee Thunderbolt Black Oxide jobber length 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. A specially designed parabolic flute form clears chips and debris fast to keep the bit cool. The 135 degree split point tip delivers a precision start and prevents walking for fast, accurate holes.