48-89-2722 Thunderbolt Black Oxide Drill Bit, 1/4 In., 4 In. OAL

The Milwaukee Thunderbolt black oxide drill bit is a jobber-length bit engineered for extreme durability and long life in wood, metal, and PVC. Whether you're a professional contractor or a homeowner tackling a weekend project, this versatile drill bit delivers precision and reliability for everyday drilling tasks.

The Thunderbolt design features a thicker core than standard drill bits, providing ultimate strength and protection against side-load breakage during demanding applications. The specially designed parabolic flute form clears chips quickly for faster drilling and reduced effort, while the 135-degree split point tip delivers a precision start and prevents bit walking. The 3-flat Secure-Grip shank holds the bit firmly in the drill chuck, ensuring stability and accuracy throughout the hole-drilling process.

Features and Benefits

• Thicker Core Design: Resists breaking and protects against side-load damage for extended bit life.
• Parabolic Flute Form: Clears chips fast and reduces drilling effort through metal, wood, and PVC.
• 135-Degree Split Point Tip: Delivers fast, precise starts with no walking or wandering.
• 3-Flat Secure-Grip Shank: Holds firmly in the drill chuck for improved accuracy and reduced vibration.
• Black Oxide Coating: Provides durability and corrosion resistance.
• Jobber Length: Versatile size suitable for general-purpose drilling applications.

Specifications

• Brand: Milwaukee
• Model: 48-89-2722
• Bit Diameter: 1/4 in
• Overall Length: 4 in
• Shank Diameter: 1/4 in
• Type: Jobber bit, 3-flute
• Flute Design: Parabolic
• Point Angle: 135 degrees split point
• Material/Coating: Black oxide

Descriptions are AI-generated. For accurate measurements, please call the store to confirm.