1These taps are made from high speed steel and surface is coated with titanium for high hardness and rust resistance 2There are total 5 pieces of taps in different sizes from M3 to M8 that you can use for tapping various threads 3Forward chip ejection design are great for through hole tapping and the chip clearing process would be better 4They are used to cut new threads or repair damaged threads, you will have a smooth tapping experience with them 5These HSS taps are great tools used to create screw threads, to cut or form the female portion of the mating pair Features: These taps are made from high speed steel and surface is coated with titanium for high hardness and rust resistance. There are total 5 pieces of taps in different sizes from M3 to M8 that you can use for tapping various threads. Forward chip ejection design are great for through hole tapping and the chip clearing process would be better. 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. Specifications: Material: High speed steel 6542 Surface Finishing: Titanium coating Chip Ejection: Forward Standard: Metric Size: M3, M4, M5, M6, M8 Quantity: 5 Package Includes: 5 x Taps