Eyech 9pc Drill Tap Bits Screw Tapping Bit Tool Spiral Flute Metric Taps Set M2 M2.5 M3 M4 M5 M6 M8 M10 M12 Thread Specification: Shank: Round Shank with Square End Size: M2 M2.5 M3 M4 M5 M6 M8 M10 M12 Material:HSS Surface treatment: Ti Feature: - These taps are made from high speed steel 6542 and surface is coated with titanium for high hardness and rust resistance. - There are total 9 pieces of taps in different sizes from M2 to M12 that you can use for tapping various threads. - Taps are designed with spiral flutes is conducive to remove crumbs, not easily broken tap. - They are used to cut new threads or repair damaged threads, you will have a smooth tapping experience with them. - These HSS taps are great tools used to create screw threads, to cut or form the female portion of the mating pair. Package Included: 9 x Machine Screw Taps