Ernie Ball 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.

• Gauges: .011, .015, .022w, .030, .042, .052. 
• Made from 80 percent copper, 20 percent zinc wire wrapped around hex shaped brass plated steel core wire
• Provides a crisp, ringing sound with pleasing overtones