Expand all tabsCollapse into tabsHighlightsIncludesMediaReviewsHighlights:1/6 to 3/8 by 64thsWhen you think carbide, get cobaltCobalt offers better versatility than high speed steelAll pieces made out of cobalt steelFor drilling standard to hard metals including cast iron, stainless steel, plastics, wood, etc..Opening the box creates an organized displayMade in the USAThe DS21CO includes:New Eng