【EXCELLENT PERFORMANCE】- The tap and die set metric and standard are entirely machined. Thus, it’s very sharp and will not damage during cutting a new thread or repairing the old one. The whole set passed the heat treatment precisely and is widely-used size. 【PREDOMINANT MATERIAL】- The sae die set made of high-durability carbon steel, which is anti-wear. Its longevity is 5-10 times that of non-carbon steel die set. It’s quite robust, which ensures that we can use it for a long time. 【PORTABLE CASE】- The case can contain the full tap and die set. You can bring it to the place where you need it. And it’s convenient to store them in the case to prevent dust. 【CONVENIENT CLAMP】- We can set the wrench at the location of clockwise rotation or anti-clockwise rotation. We can rotate the clamp at 180° to make it. It’s very convenient to use. 【VERSATILE USAGE】- The large tap and die set can work on most metals, such as carbon steel, iron, aluminum, brass, copper, stainless steel, etc. We can use it to make a new thread or repair the old one., Manufacturer: RSGXLFQZVAK