1/2" THUNDERBOLT® Titanium Drill Bit

The Milwaukee 48-89-2229 is a 27/64" Thunderbolt® titanium-coated drill bit designed for general-purpose drilling in metal, wood, and PVC, offering durability and long life in a single large-size bit.

Key Features

• Titanium Coating (TiN) – Reduces heat buildup and extends bit life up to 3× longer than standard bits
• 135° Split Point Tip – Starts on contact and helps prevent walking for accurate hole placement
• Thicker Core (Thunderbolt Web Design) – Adds strength and resistance to breakage under side load
• Parabolic Flute Design – Clears chips quickly for faster, cooler drilling
• 3-Flat Secure-Grip Shank – Reduces slipping in the drill chuck

Specs (typical)

• Size: 27/64 in
• Type: Jobber-length drill bit
• Material: High-speed steel with titanium coating
• Shank: Reduced 3-flat (fits standard chucks)

Best Uses

• Drilling steel and structural metal
• Wood framing and construction
• PVC and plastic fabrication
• General jobsite drilling where a specific large hole size is needed