6 PIECE METRIC THREAD TAP DRILL BITS SET Complete Hole Drilling, Tapping And Deburring/Countersinking In One Operation With Power Drill.  It Saves Labor, Time. The thread drilled by the drill is very reliable. Even if you do not use an electric drill, you can easily screw in the screws just by hand, saving a lot of work time.   FEATURES Sturdy material - made of HSS, enough hardness and sturdy construction make them not easy to break or deform, the surface is coated with titanium to prevent oxidation and not easy to rust, which can serve you for long time Metric thread drill bit size - there are totally 6 pieces of taps in different sizes, such as M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 1, M8 x 1.25, M10 x 1.5, standard 1/4 inch (6.35 mm) hex shank Widely application - these drill bit sets are suitable for drilling holes in wood, aluminum, iron, plastic and other materials with low hardness, the thickness of the material to be drilled is within 5 mm, which can save much labors and efforts Easy to use - fast replacement composite cone by using drill edged principle; Drilling and tapping in one, one-step processing, which can help to save processing steps and time, also help to make your work more efficient SPECIFICATION PRODUCT DETAILS Suitable for soft metal, aluminum, and iron High-speed steel(HSS ) material Shank: 1/4" (6.35mm) hex shank METRIC SIZES M3x0.5: Total length: 54mm, drill diameter: 2.5mm M4x0.7: Total length: 54mm, drill diameter: 3.3mm M5x0.8: Total length: 55mm, drill diameter: 4.2mm M6x1: Total length: 56mm, drill diameter: 5.0mm M8x1.25: Total length: 57mm, drill diameter: 6.8mm M10x1.5: Total length: 58mm, drill diameter:8.5mm Square handle: 6.35mm PACKAGE INCLUDES 1 * 6 PIECE METRIC THREAD TAP DRILL BITS SET