 Ernie Ball 2003 Earthwood 80/20 Bronze Medium Light Acoustic Strings (3-Pack)Gauges 12-16-24w-32-44-54.These strings are made from 80% copper, 20% zinc wire wrapped around hex-shaped tin-plated steel core wire. These popular acoustic strings provide a crisp, ringing sound with pleasing overtones. All Ernie Ball strings are precision manufactured to the highest standards and most exacting specs to assure consistency, optimum performance and long life. Accessories, Strings, Guitar Strings, Acoustic Guitar Strings, 6 String Sets for Acoustic Guitar, .012 Gauge Acoustic Guitar Strings Ernie Ball P02003-3PK Ernie Ball, .012 Gauge Acoustic Guitar Strings |