Ernie Ball Earthwood Phosphor Bronze Acoustic Guitar Strings are made from 92% copper, 7.7% tin, 0.3% phosphorus wire wrapped around tin plated hex shaped steel core wire. These guitar strings have a light orange, gold color and provide a mellow, ringing sound, with excellent clarity.
Medium Gauges .012, .016, .024, .032, .044, .054
Medium Light Gauges .011, .015, .022, .030, .042, .052