Features: This tap and die set is made of carbon steel for durability and long service life. The wrenches are very practical and include 5 wrenches. The adjustable wrench allows you to easily and firmly tighten the taps and dies. It is mainly used for hand tapping and threading. This set contains many taps and dies of different sizes for different types of tapping and threading. This is an excellent tool set for cutting or shaping the female and male parts of nuts or bolts.