0.3mm (28 GA) colored copper wire. Gold, silver, copper and bronze. This jewelry wire set includes four rolls of different color wire. They are easy to use and work with different types of beads, necklace and bracelet designs. All these metal jewelry wires are approx. 0.3mm in diameter and 11 yards per roll. High quality. The art craft wires set can be used for jewelry projects like anklets, bracelets, necklaces, wire wrapped pendants, beaded chains, jump rings, ear wires, etc. They also suitable for floral arranging, framing and hair crafts. Perfect for jewelry making, necklace, bracelet earrings and more! String beads, make knots, the possibilities are endless.