Set of 29 jobber length drill bits includes inch sizes 1/16″e; to 1/2″e; in 1/64″e; incrementsCobalt steel provides extended tool life compared to high-speed steel drill bits when drilling hard materialsGold oxide finish lubricates the drill bit and provides wear resistanceSelf-centering 135-degree split point penetrates hard material without a pilot hole and produces small chips to reduce cloggingMeets ANSI specifications.