High Speed Steel Drill Bits 1/8 12Pcs This is a new set of 12 number 30 high speed steel twist drill bits 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 High speed steel will not lose temper due to excessive heat These bits measure approximately 2 13/16" (71 mm) long and have a 1/8" shank