Product Description for the D'Addario EJ17 Phosphor Bronze Acoustic Strings 10-Pack (Medium 13-56)

Genuine phosphor bronze alloy retains flexibility as well as brilliant tone for many hours of hard play. Computer-controlled wrapping around a hex core ensures consistency and extends life.

D'Addario is the world's largest manufacturer of strings for musical instruments. Many top guitarists won't play any other brand. Regardless of your playing style, D'Addario has a set that's right for you.