ERNIE BALL 2004 ACOUSTIC 11-52 Strings

Ernie Ball Earthwood 80/20 bronze acoustic guitar strings
are made of 80% copper and 20% zinc wire, wound
around a hexagonal brass-plated steel core wire.
These acoustic guitar strings produce a crisp,
ringing sound with pleasant overtones.
Gauges: .011, .015, .022w, .030, .042, .052