Drill America cobalt drill bit set (11) DWDCO series
Cobalt drill bits designed for harder metals with a thin gold oxide finish and round shanks for versatile toolholding. Customers note durability and sharpness across materials like galvanized steel and aluminum
Highlights
- cobalt for harder metals
- gold oxide surface
- round shank versatility
Pros
- cobalt steel with improved performance on hard metals
- gold oxide finish aids identification and performance
- round shanks for versatile toolholding
- effective chip evacuation in counterclockwise cutting
- durable and sharp according to customer feedback
Cons
- mixed opinions on size accuracy
- some users question geometric fit against description
Best For
Features
- Cobalt steel tools improve performance when cutting harder metals like stainless steel or nickel alloys
- Gold oxide provides a thinner surface treatment with performance similar to uncoated tools
- Round shanks enable compatibility with a wide range of toolholding systems
- Spiral flutes evacuate chips up and out when cutting counterclockwise (right-hand cut) to reduce clogging
- Designed for drilling in tough, high-tensile strength materials
