Ernie Ball Earthwood Custom Medium 80/20 Bronze Acoustic Guitar Strings 12.5-56

Ernie Ball Custom Earthwood 80/20 Bronze Acoustic Guitar Strings are made from 80 percent copper, 20 percent zinc wire wrapped around a hex shaped brass plated steel core wire. These acoustic guitar strings provide a crisp, ringing sound with pleasing overtones. Compatible with gauges 12.5, 16.5, 24w, 34, 46, 56