Chicago Latrobe 559 Series Cobalt Steel Short Length Drill Bit Set In Metal Case, Gold Oxide Finish, 135 Degree Split Point, Inch, 29-piece, 1/16"- 1/2" in 1/64" increments

Set of 15 short length drill bits includes inch sizes 1/16" through 1/2" in 1/64" increments, Cobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materials, Gold oxide finish lubricates and provides wear resistance on ferrous materials, Self-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce clogging, Extra thick web for increased strength and rigidity compared to standard drill bits, Made in the USA