Hss Tap Drill Bit Set, Metric Thread Titanium Coasted and Bits for Wood Plastic Aluminum Copper 6pcs/Set M3 M4 M5 M6 M8 M10

[Size] High Speed Steel (HSS)***Size: M3x0.5, 2*M4x0.7, M5x0.8, 2*M6x1, M8x1.25, M10x1.5. [More Efficient] Taps are designed with spiral flutes and the chip clearing process would be better. Greatly save time and improve efficiency. [Practical] 1/4 inch hex shank, quick and easy to change. Self-centering point, no need assistance in center drilling or center punching.Drilling and tapping at the same time, one-step processing. Greatly decrease processing steps, save time and improve working efficiency. [More Precise] These taps are used on a machine to do the tapping, generally more accurate because human error is eliminated. Self-centering point, no need assistance in center drilling or center punching. [Applicable] They are taps with drilling function, used to drill a hole and cut new threads at the same time, you will have a smooth tapping experience with them, and suitable for drilling wood, plastic, fine copper, aluminum and other soft metals (5-6 mm), not for hard materials (eg steel sheet).