REINFORCED CORE DRILLING PRECISION

The Milwaukee 48-89-2800 THUNDERBOLT series represents a fundamental upgrade in high-speed steel accessory engineering, designed specifically to mitigate the most common failure point in jobsite drilling: side-load breakage. By integrating a significantly thicker core than standard helical bits, these tools withstand the lateral stresses inherent in handheld drilling applications. The specialized parabolic flute geometry ensures rapid chip evacuation, preventing the thermal fatigue that typically dulls inferior bits when working through thick gauge metals or hardwoods.

• / THUNDERBOLT Web Design: Engineered with a thicker core to provide ultimate strength and protection against snapped bits during high-torque applications.
• / 135-Degree Split Point: Delivers a precision start on contact, eliminating bit walking and ensuring accurate hole placement without a center punch.
• / Parabolic Flute Geometry: Rapidly clears chips and debris from the hole to keep the cutting edge cool and extend service life.
• / Corrosion Resistant Black Oxide: Specialized coating reduces friction and heat build-up while providing a shield against environmental oxidation.
• / 3-Flat Secure-Grip Shank: Prevents the bit from spinning in the chuck, ensuring maximum power transfer during heavy-duty boring.

WHAT'S IN THE BOX

• / (1) 14PC THUNDERBOLT Black Oxide Drill Bit Set (48-89-2800)
• / (1) Customizable PACKOUT-Ready Accessory Case