Description: These HSS taps are great tools used to create screw threads, to cut or form the female portion of the mating pair. They are used on a machine to do the tapping, such as a lathe, radial drilling machine, bench type drill machine, pillar type drill machine, vertical milling machines. Machine tapping with these taps is faster, and generally more accurate because human error is eliminated. Features: These taps are made from high speed steel and surface finished by nitriding 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. Taps are designed with spiral flutes 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 taps are used on a machine to do the tapping, generally more accurate because human error is eliminated. Specifications: Material: High speed steel Surface Finishing: Nitriding Type: Spiral flutes Standard: Metric Size: M3*0.5, M4*0.7, M5*0.8, M6*1.0,M8*1.25 Function: Internal chip removal Used On: Machine Quantity: 5 Package Includes: 5 x Taps