Milwaukee® Thunderbolt® Secure-Grip™ jobber length drill bit, imperial, 21/64 in, 0.3281 in drill, 4-5/8 in OAL, 3-5/16 in cutting depth, parabolic flute, 3-5/16 in flute length, 3-flat shank, 135° point, split point, HSS cutting edge, HSS, black oxide, applicable materials: metal, plastic and wood.
Features
- Extreme durability - thicker web provides greater strength and longer life
- Fast, accurate drilling - 135° split point tip starts on contact to prevent walking while the parabolic flute clears chips fast
- Reduced slipping - 3-flat Secure-Grip™ shank holds the bit firmly in the drill chuck
- Versatile - reduced shank dia for use in 3/8 in chucks
- Corrosion-resistant - black oxide coating provides lubricity and resists corrosion of the bit
