Drill America D/ACO cobalt heavy duty drill bits (6-pack)
Cobalt steel drill bits with round shanks for versatile toolholding. Designed for harder metals like stainless steel, with a thin gold oxide surface. Customers note sharp, durable cuts and good value
Highlights
- cobalt alloy for hard metals
- round shank for compatibility
- gold oxide surface treatment
Pros
- cobalt steel composition for harder metals
- round shank for wide toolholding compatibility
- sharp, durable cuts
- includes 6-pack
Cons
- angle feedback from customers is mixed
Best For
Features
- Cobalt steel with increased cobalt content for cutting harder metals
- Gold oxide is a thinner surface treatment with performance similar to uncoated tools
- Round shanks compatible with various toolholding systems
- Spiral flutes evacuate chips when run counterclockwise (right-hand cut) to reduce clogging
- Manufactured to National Aerospace standard 907
