Cleveland Cle-Max 115 piece high speed steel general purpose jobber length drill bit set. High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications. 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. Set size range: 1/16-inches - 1/2-inches, letter A to Z, wire gage #1 - #60. Set size increment: 1/64-inches. Huot metal index set case type. Improved geometry. Premium substrate for better wear life. 2002G drill style.