Ernie Ball Earthwood Phosphor Bronze Acoustic Guitar Strings are made from 92% copper, 7.7% tin, and 0.3% phosphorus wire wrapped around tin-plated hex-shaped steel core wire. These guitar strings have a light orange, gold colour and provide a mellow, ringing sound, with excellent clarity.

Gauges .011, .015, .022w, .030, .042, .052