DescriptionDrill through metal easily with help from this high-speeds steel drill bit set. The drill bits make a great choice when working with stainless steel, aluminum alloy, titanium alloy, and other high hardness materials. for professionals and DIYers alike, the drill bit set comes in handy for a variety of projects, whether at home or on the jobs. Features- Color: Assorted color.- Material: Steel.- Size:.00 x 2.00 x 1.80cm/ 3.54 x 0.79 x 0.71 inch.- Made of classic steel material, high hardness, offer superior cutting power and durable.- Widely used suitable for DIY, home and general building or engineering using, etc.- Quickly and accurately drill a smooth hole. Better in centering and no skid.- Five-edged chamfer design will fast discharge chips from the hole on both sides automatically.- It can effectively prevent the accumulation of debris retention, improve the drilling efficiency.1 x counterbore drill (2.8 x 8)1 x counterbore drill (2.8 x 10)1 x counterbore drill (3 x 8 )1 x counterbore drill (3 x 10)1 x counterbore drill (3.2 x 8)1 x counterbore drill (3.2 x 10)