Drill America #4 Cobalt Heavy Duty Drill Bit (12 pk), D/ACO
Cobalt steel drill bits for harder metals with round shanks for versatile toolholding. Noted for quality, sharpness, and performance; some mixed feedback on angle design
Highlights
- cobalt for hard metals
- round shank versatility
- pack of 12
Pros
- cobalt steel tools for harder metals
- round shanks for versatile toolholding
- sharp and durable performance
- includes multiple bits per pack
Cons
- mixed feedback on angle design
Best For
Features
- Cobalt steel tooling enhances performance when cutting harder metals like stainless steel or nickel alloys
- Gold oxide coating is a thinner surface treatment with performance similar to uncoated tools
- Round shank enables compatibility with a wide range of toolholding systems
- Right-hand cut spiral flutes evacuate chips up and out to reduce clogging when cutting counterclockwise
- Manufactured to National Aerospace Standard 907
