The threading die is a pleasantly effective tool that I have found indispensable in my Industrial and Scientific work. Through trial and error I found that it is made of high carbon steel, which is a great advantage. THE die allows for a smooth thread-cutting process and the precision casting makes it highly durable. One minor drawback I noticed is that it tends to get hot quickly, so users should take extra caution. Overall, the threading die is a worthwhile investment for any industrial or scientific cutting tools collection..