Milwaukee 48-89-2721 Thunderbolt Black Oxide Drill Bit, 15/64 In.

The Milwaukee Thunderbolt Black Oxide Drill Bit is a jobber-length twist drill designed for drilling in wood, metal, and PVC. The black oxide coating reduces binding and provides anti-corrosive protection. The Thunderbolt's thicker core resists breakage under side-load stress, delivering durability and consistent performance across repetitive drilling tasks.

The 135-degree split point tip delivers a precision start without walking, enabling fast and accurate hole placement even on curved surfaces. The parabolic flute design clears chips efficiently, while the 3-flat Secure-Grip shank holds the bit firmly in the chuck to prevent slipping. The bit requires less effort to drill through metal, wood, and PVC and maintains full performance with cordless drills.

Features and Benefits

• Black Oxide Coating: Reduces binding in wood and metal while providing anti-corrosive protection for extended tool life.
• Thicker Thunderbolt Core: Resists breaking and protects against side-load damage for superior durability.
• 135-Degree Split Point Tip: Starts precisely without walking, delivering fast, accurate holes with reduced drilling effort.
• Parabolic Flute Design: Clears chips quickly to maintain drilling efficiency and prevent clogging.
• 3-Flat Secure-Grip Shank: Holds the bit firmly in the drill chuck to prevent slipping during operation.
• Cordless-Drill Compatible: Maintains full performance with battery-powered drills without loss of effectiveness.

Specifications

• Brand: Milwaukee
• Model: 48-89-2721
• Diameter: 15/64 inch
• Overall Length: 3-7/8 inch
• Bit Type: Jobber length, 3-flute twist drill
• Flute Design: Parabolic
• Shank: 3-flat Secure-Grip
• Tip Angle: 135 degrees
• Coating: Black oxide