7 High Speed Steel Hex Head Twist Drill Bits. This is a new set of 7 high speed steel hex head drill bits. They will fit in most cordless screwdrivers. High speed steel drill bits will not lose temper (hardness) due to excessive heat build up. Great for drilling ferrous metals, tough casting sand forgings, working hardened stainless steel and other hard steels and tough high tensile strength nonferrous metals like titanium. You receive: One 1/16" drill bit. One 5/64" drill bit. One 3/32" drill bit. One 9/64" drill bit. One 5/32" drill bit. One 11/64" drill bit. One 3/16" drill bit. We work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.