Ernie Ball 2003 Earth 80/20 Bronze Medium Light 12-54

The Ernie Ball 2003 Earth 80/20 Bronze Medium  Light 12-54 are acoustic guitar strings made with a winding with 80% copper, and 20% zinc around a hexagonal-shaped tin-plated steel core. The most popular acoustic guitar strings provide a crisp, ringing tone with pleasing harmonics.
 
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