Specially made through CNC machine With Well-Tempered used in Hydraulic press or hammer. This die can be used to pattern wire to be used for bangles, earrings, rings, spinners, earrings. Simply anneal your silver/copper wire and hammer into the die. Prints easily to decorate your metal. As with most of my items, they are also use with any type of clay Wire Die Half round size - 4mm wide + mm80 long FREE Express SHIPPING with DHL Express.