Ernie's Light Earthwood 80-20 Bronze strings are one of the most popular acoustic strings in the market. They are made from 80% copper, 20% zinc wire wrapped around hex shaped tin plated steel core wire. They provide a clear sound with incredible overtones. Many guitar players choose Ernie Ball when they need a reliable string for their performance. Here at Elizondo Music we offer the best price and free shipping at our main site. See picture