Wounded with silver coated wire, Magma COATED Classical Guitar strings are specially designed for professional guitarists. The trebles, available in crystal, titanium nylon or carbon, and the coated wound basses are perfectly balanced and allow for bright, high-volume sounds. This coating provides a barrier against the natural wear of the strings and greater resistance to oxidation, giving an extended durability (E.D.), 3 to 5 times more than regular strings.