Gauges: 12-16-25-35-45-56.

D'Addario EJ19 Bluegrass Medium Light acoustic guitar strings employ a genuine phosphor bronze alloy that retains flexibility as well as brilliant tone for many hours of hard play (light top, medium bottom). Computer-controlled wrapping around a hex core ensures consistency and extends life. Many top guitarists won't play any other brand. 

D'Addario is the world's largest manufacturer of strings for musical instruments. Regardless of your playing style, D'Addario has a set of strings that's right for you.