Ernie Ball 2003 Earthwood 80/20 Bronze Acoustic Guitar Strings, Medium Light (12- 54)
Made from 80% copper, 20% zinc wire wrapped around hex shaped tin plated steel core wire. The most popular acoustic provides a crisp, ringing sound with pleasing overtones. (12 - 54)
Gauges: .012, .016, .024, .032, .044, .054