Milwaukee Thunderbolt® black oxide jobber length drill bits are designed for extreme durability and long life. The Thunderbolt® web features a thicker core than a standard drill bit to provide ultimate strength and protect against side-load breakage. A specially designed parabolic flute form clears chips fast, while the 3-flat Secure-Grip shank holds the bit firmly in the drill chuck. The 135 deg split point tip delivers a precision start and prevents walking for fast, accurate holes. Effective for drilling on curved surfaces, Milwaukee Thunderbolt® black oxide bits require less effort to drill through metal, wood and PVC and are highly recommended for use with portable drills.
| Applicable Materials | Metal, Plastic, PVC, Wood |
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| Cutting Direction | Right Hand |
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| Cutting Edge Material | HSS |
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| Diameter | 1/4 in |
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| Finish | Black Oxide |
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| Flute Length | 3-3/4 in |
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| Flute Type | Parabolic |
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| Material | HSS |
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| Number of Flutes | 3 |
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| Overall Length | 4 in |
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| Point Angle | 135 deg |
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| Point Type | Split |
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| Quick Change Shank | No |
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| Shank Diameter | 1/4 in |
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| Shank Length | 1/4 in |
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| Shank Type | 3-Flat |
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| Suitable for | Portable Drills |
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