Michigan Drill extra long drill bit. High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. 118 degrees conventional point. Round shanks allow use with a wide variety of tool holding systems. When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging. 5/16-inches size. These drills are utilized in deep hole or long reach drilling applications in many kinds of materials for either hand held or fixed spindle use.