1. Instead of other kits which are made of low carbon steel, our kit are made of high carbon chromium bearing steel which are more stronger, An overall chromium coating improves the corrosion resistance of
the generally used through-hardening bearing steel;
2. 20 piece tungsten steel set comes in an organized, rugged plastic storage case;
3. Ideal for rethreading fasteners and fastener holes for auto and machinery repair. Perfect set for the
professional craftsman.
4. Tap and die set is designed to thread cutting: tap is used to process internal thread, while the die is for
external thread;
5. Easily to start, it is suitable for most hand threading applications.