Drill America 57/64in Reduced Shank Cobalt Drill Bit
Cobalt drill bit with 1/2in shank for harder metals. Improves performance with cobalt content and gold oxide surface. Some customers report variability in dullness and durability
Highlights
- cobalt enhanced performance for hard metals
- versatile round shank for diverse toolholders
- aerospace standard 907 compliance
Pros
- cobalt steel for harder-metal cutting
- round shank compatible with multiple toolholding systems
- thin gold oxide coating aids identification and performance
- counterclockwise/ right-hand cut chip evacuation reduces clogging
- manufactured to aerospace standard 907
Cons
- mixed customer feedback on sharpness and durability
- reports of brittleness and bit breaking on first holes
- some wobble during use
Best For
Features
- Cobalt steel tool composition improves performance when cutting harder metals like stainless steel or nickel alloys
- Gold oxide is a thinner surface treatment, similar to uncoated tools in performance
- Round shank design supports compatibility with a variety of toolholding systems
- Counterclockwise (right-hand cut) operation with spiral flutes helps evacuate chips to reduce clogging
- Manufactured to National Aerospace standard 907
