D'Addario EZ910 American Bronze acoustic guitar strings, which offer bright tone with great sustain. They combine the brilliance of 80/20 Bronze with the tonal characteristics of Phosphor Bronze. 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 of strings that's right for your acoustic guitar.D'Addario EZ910 American Bronze Gauges 11-15-24-32-42-52