Drill America CRYO Series 5 Piece Cryogenic HSS Black and Gold Drill Bit Set (1/4", 5/16", 3/8", 7/16", 1/2")

5 Piece Drill Bit Set contains sizes 1/4", 5/16", 3/8", 7/16" and 1/2" in a plastic pouch case Cryogenic KFD Drill Bits are cryogenically frozen to -300°F for 48 hours resulting in increased tool life, torsion strength and improved corrosion resistance Cryogenic treatment prevents breakage and chippage 135° split point tip for fast penetration and accurate drilling Cuts faster, longer and produces smoother holes than standard drill bits