Features These taps are made of high quality bearing steel for high hardness. These taps are used with a tap wrench for tapping, the wrench is not included. They are used to cut new threads or repair damaged threads, you will have a smooth tapping experience with them. Great tools for creating screw threads on wood, plastic, aluminum or many other soft materials. There are a total of 7 taps in different sizes from M3 to M12, with which you can cut different threads. Specifications: Material: bearing steel. Default: Metrics Size: M3, M4, M5, M6, M8, M10, M12 Quantity: 7. Instructions: 1. First insert the cone part and make sure the center line of the tap matches the centre line of the hole. 2. Turn the tap wrench with an even force to feed the tap, you do not need to add any force after feeding. 3. Turn 45° backwards each time to cut the chip to avoid blocking. 4. If it is difficult to turn the tap, stop adding force or the tap is broken. Features:These taps are made of high quality bearing steel for high hardness. They are used to cut new threads or repair damaged threads, you will have a smooth thread cutting experience with them. These taps are used with a tap wrench for tapping, the wrench is not included. There are a total of 7 taps in different sizes from M3 to M12, which you can use to cut different threads. Great tools for creating threads on wood, plastic, aluminum or many other soft materials. Package includes: 7 x taps (tap wrench is not included) Package List