Drill America 3 Piece Quick Change Cobalt Drill Set with Hex Shank, (1/8, 3/16", 1/4"), 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 3 Piece Set with sizes 1/8, 3/16", 1/4"