Ccylez 1/4in HSS (4341) Hex Shank Combination Titanium Screw Thread Metric Countersink Drill Tap Bit Set M3-M1 - 6 Pieces

These taps are made from high speed steel and surface finished by nitriding for high hardness and rust resistance
There are total 6 pieces of taps in different sizes from M3 to M10 that you can use for tapping various threads
Taps are designed with spiral flutes and the chip clearing process would be better
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
These taps are used on a machine to do the tapping, generally more accurate because human error is eliminated