Drill America D/AMMCO15.00 1/2" Reduced Shank Cobalt Silver and Deming Drill Bit, 15 mm

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. , Manufactured to National Aerospace standard 907.