9/32" Thunderbolt® Black Oxide Drill Bit
- 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
- Black oxide coating provides lubricity and resists corrosion of the bit