Ernie Ball Everlast Coated acoustic guitar strings use ground-breaking nanotechnology that repels unwanted moisture and oils that negatively impact your tone. Made from 80 percent copper, 20 percent zinc wire wrapped around a hex shaped brass plated steel core wire providing a crisp, ringing sound with pleasing overtones. Gauges .010, .014, .020, .028, .040, .050.
Made of 80 percent copper, 20 percent zinc wire wrapped in tin plated steel core wire
1,000 times thinner than any other string coating
Keeps strings as fresh as the day they were made