DWDCO cobalt drill bit set (Pack of 12) by Drill America
Cobalt steel drill bits designed for harder metals with gold oxide surface. Round shanks improve toolholding compatibility. One customer notes they stay sharp drilling through galvanized steel
Highlights
- cobalt for hard metals
- round shank versatility
- aerospace standard 907
Pros
- cobalt steel composition for hard metals
- round shanks for versatile toolholding
- thin gold oxide surface treatment
- effective chip evacuation in counterclockwise use
- manufactured to national aerospace standard 907
Cons
- mixed opinions on size accuracy
Best For
Features
- Cobalt steel tooling for improved performance with harder metals such as stainless steel
- Gold oxide coating is a thinner surface treatment, similar performance to uncoated tools
- Round shanks compatible with a wide range of toolholding systems
- Spiral fluted design evacuates chips when cutting in counterclockwise direction (right-hand cut)
- Manufactured to National Aerospace standard 907
