Wound Strings are 80% copper, 20% zinc wire wrapped around hex shaped tin plated steel core wire
Plain strings are made of specially tempered tin plated high carbon steel
The most popular acoustic guitar string alloy provides well balanced projection with crisp pleasing highs
Element Shield Packaging Prolongs string life and keeps strings as fresh as the day they were made
Made in California, U.S.A. Featuring the finest and freshest materials. 
Gauge: 11 15 22 30 42 52