Milwaukee 11/32" THUNDERBOLT® Black Oxide Drill Bit

REINFORCED CORE TECHNOLOGY FOR UNMATCHED DRILLING RIGIDITY

The Milwaukee Thunderbolt Black Oxide series represents a significant advancement in jobber-length bit geometry, specifically engineered to eliminate the primary failure point of professional drilling: side-load breakage. By incorporating the proprietary Thunderbolt web—a thicker core than standard twist bits—this bit maintains structural integrity under heavy feed rates and high-torque demands. The parabolic flute design is a critical mechanical feature, engineered to eject chips at a higher velocity to mitigate thermal accumulation, which is the leading cause of edge dulling in high-carbon and alloy steels. For professionals transitioning between flat stock and curved pipe, the 135-degree split point provides immediate mechanical engagement without the need for a center punch, ensuring hole location remains precise from the first rotation.

• / Thunderbolt® Web: Thicker core construction provides ultimate strength and protects against breakage during deep-hole or side-load applications.
• / 135° Split Point Tip: Starts on contact to prevent bit walking, reducing surface marring and ensuring precision in metal, wood, and PVC.
• / Parabolic Flute Form: Clears chips and debris rapidly to keep the bit cool, extending the service life of the cutting edge.
• / 3-Flat Secure-Grip™ Shank: Engineered with three flat sides to lock into the drill chuck, eliminating bit slippage under high-torque loads.
• / Black Oxide Coating: Provides essential lubricity and superior corrosion resistance for long-term jobsite durability.

WHAT'S IN THE BOX

(1) 11/32" Thunderbolt® Black Oxide Jobber Length Drill Bit (48-89-2728)