Amplify your acoustic guitar performance with the Ernie Ball Earthwood 80/20 Bronze Acoustic Guitar strings. Made with 80% copper and 20% zinc, wrapped around a hex-shaped brass-plated steel core wire, it delivers crisp, ringing sound with pleasing overtones. The gauge range of 0.012 - 0.054 offers a well-balanced tension for a versatile playing experience. | Ernie Ball Earthwood 80/20 Bronze 0.012 - 0.054 Acoustic Guitar String (P02003)