This alloy steel wire cone and die kit can help you overcome damaged nuts, bolts and threads. When it is difficult to find replacement bolts, this tap and die set can easily remove flaws on the threads|The use of high-quality bearing steel is durable and has a long service life. It can improve the efficiency of thread processing, which is an indispensable tool for manual tapping.|With this screwdriver and wrench set, thread processing will become easier and more precise.|It is an ideal choice for manual thread processing and tapping in machine manufacturing.