Drill Bit, Thunderbolt®, 21/64 in Dia, Black Oxide Drill Bit, 3-Flat Shank, 4-5/8 in Length

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.Drill Bit, Thunderbolt®, 21/64 in Dia, Black Oxide Drill Bit, 3-5/16 in Flute, 4-5/8 in Length, Recommended Use: Metal, Wood, Plastic, 3-Flat Shank