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 tappingvarious threads.Forward chip ejection design are great forthrough 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.TheseHSS 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 6542Surface Finishing: Titanium coatingChip Ejection: ForwardStandard: MetricSize: M3, M4, M5, M6, M8Quantity: 5Package Includes:5 x Taps