![Ernie Ball Earthwood Medium Acoustic 80/20 Bronze (13-56)](http://shop.musicworldstores.com/cdn/shop/products/P02002_{width}x.png?v=1636758420)
Ernie Ball Earthwood 80/20 Bronze Acoustic Guitar Strings are made from 80% copper, 20% zinc wire wrapped around hex shaped brass plated steel core wire. These acoustic guitar strings provide a crisp, ringing sound with pleasing overtones. Gauges .013, .017, .026, .034 .046, .056