Drill America – D/A833SD-CO-SET 33 Piece m42 Cobalt Reduced Shank Drill Bit Set (1/2″ – 1″ x 64ths), D/ACO Series
- Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys.
- Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools.
- performance is similar to uncoated tools.
- Round shanks allow use with a wide variety of toolholding systems.
- When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging.
- 33 piece drill bit set comes in a metal case.