21PC THUNDERBOLT® Black Oxide Drill Bit Set

Milwaukee 48-89-2776 — Product Description

The Milwaukee 48-89-2776 is a 1/2" x 12" Aircraft Length Black Oxide Drill Bit, designed for deep-reach drilling in metal, wood, and plastic where standard-length bits cannot reach.

This is part of Milwaukee’s Aircraft Length (extended reach) series, which prioritizes depth and access, not large diameter or specialty material cutting.

Key Features

• 12-inch overall length – reaches deep into framing, studs, and confined spaces
• 135° split point tip – starts on contact and reduces walking for accuracy
• Black oxide coating – reduces friction and improves corrosion resistance
• Parabolic flute design – clears chips quickly for smoother drilling
• 3-flat Secure-Grip shank – reduces slipping in the drill chuck and improves control
  

Specs

• Diameter: 1/2"
• Length: 12"
• Material: High-speed steel (HSS)
• Finish: Black oxide
• Shank: Reduced / 3-flat
• Use: Metal, wood, PVC, plastics

Best Uses

• Drilling deep into walls, studs, and framing
• Electrical, plumbing, and HVAC installations
• Running conduit or fasteners through thick assemblies
• Accessing recessed or obstructed drill points

Bottom Line

The 48-89-2776 is not about drilling a bigger hole—it’s about drilling a standard 1/2" hole in places you normally can’t reach. It’s a specialty long-reach drill bit for access-heavy work, commonly used on job sites for framing and utility installs.