Drill America 29 Piece Quick Change Cobalt Drill Set with Hex Shank in Round Plastic Case, (1/16" - 1/2" x 64ths), COHEX Series

Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys 1/4 in. hex shank can be used in quick change impact drivers 135 degree split point tip for self-centering and reducing thrust; Compared to a conventional 118 degree tip, these drills wont go "walking" on you Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools Sizes in set: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8", 25/64", 13/32", 27/64", 7/16", 29/64", 15/32", 31/64" and 1/2"