Milwaukee 48-89-2737 31/64′ Thunderbolt® Black Oxide Drill Bit

Engineered for extreme durability, the THUNDERBOLT® Black Oxide Drill Bit from Milwaukee Tool delivers superior performance across a range of materials, including aluminum, wood, and steel. Its thicker web design enhances strength and prolongs the bit’s life, while the black oxide coating not only lends corrosion resistance but also offers lubricity for smoother operation. The 135° split point tip ensures fast, accurate drilling by starting on contact without the risk of walking, complemented by a parabolic flute that efficiently clears chips for uninterrupted work. With a reduced shank diameter, this bit is versatile enough for use in 3/8″ chucks and features a 3-Flat Secure-Grip™ shank that minimizes slipping, making it a reliable choice for any drilling project.