HSS-6542 alloy tool steel construction ensures exceptional hardness and wear resistance for long-lasting performance. Versatile round die suitable for Typical threading applications, ideal for processing, correcting, or cleaning external threads in various materials. Features a conical locking hole devise for strong locking, preventing loosening during use, perfect for re-threading existing threads in hard materials. User-friendly devise with a positioning groove for easy alignment with fastening screws, making it simple to use for both professionals and DIY enthusiasts. Compatible with a wide range of screw sizes from M1 to M12, making it a must-have tool for maintenance, repair, and metalworking projects., Manufacturer: Vividcrate