Ernie Ball 2012 12STR Acoustic Guitar Strings Earthwood 80/20 BRONZE 12 String Medium .011 / .052 11-52

Specifications:
 

Made from 80% copper, 20% zinc wire wrapped around hex shaped tin plated steel core wire. The most popular acoustic guitar strings provide a crisp, ringing sound with pleasing overtones. .011*.011, .015*.015, .024w*.010, .030*.014, .042*.022w, .052*.028