Milwaukee Thunderbolt 31/64 In. Black Oxide Drill Bit Garage Door Openers & Hardware The fully insulated probe tip

The fully insulated probe tip eliminates the risk of contacting live electrical wires while the patented battery check feature designed into the unit ensures tester and batteries are operating properly

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Milwaukee Thunderbolt 31/64 In. Black Oxide Drill Bit Garage Door Openers & Hardware The fully insulated probe tipMilwaukee 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.