M4 HSS 1/4" Hex Shank Drill and Tap Taper Bits Hexagonal Handle Compound Power Tool Part

[Application] :Hex shank drill is high hardness ,anti?rust ,strong and ,suitable for drilling ,tapping and cutting of soft metals ,aluminum plates ,iron ,etc . [Self?centering Point] :Tap taper drill bit is easy to use ,self?centering point ,no need for auxiliary center drilling or center punching . [Improves Work Efficiency] :Drilling and tapping integrated ,one?step processing ,greatly saves processing steps and time costs ,and improves work efficiency . [Unique Design] :This tap drill set has a unique design ,at the same time drilling ,tapping and chamfering . [Good Performance] :Accurate ground point ,flutes ,body ,clearance ,and drill diameters for the best accuracy and performance .