22 Spiral Hand Drill Swivel Pin Vise Twist Drill Bits The is a new set of 20 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 These bits are sizes #61 to #80 This is a new spiral drill To use just move the center piece up and down