Drill America cobalt heavy-duty drill bit set (19/64")
Cobalt steel drill bits with round shanks for versatile toolholding. Designed for harder metals with improved performance and durability; customers note sharp cuts and long life. One user highlights extended life versus competing cobalt bits
Highlights
- rated for hard metals
- round shank versatility
- coated with gold oxide surface treatment
Pros
- cobalt steel for hardness
- round shanks for versatile toolholding
- sharp cuts and durability
- suitable for harder metals
Cons
- angle aspect feedback is mixed
Best For
Features
- Cobalt steel with increased cobalt for cutting harder metals
- Gold oxide coating thinner than black oxide, similar to uncoated performance
- Round shank design compatible with diverse toolholding systems
- Right-hand cut spiral flutes evacuate chips to reduce clogging
- Manufactured to National Aerospace standard 907
