Ernie Ball Earthwood Phosphor Bronze Acoustic Guitar Strings 13-56 Gauge - Medium

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. 

Gauges .013, .017, .026, .034, .046, .056