Ernie Ball 2144 Phosphor Studio Bronze Medium 13-56 Acoustic Guitar Strings

• Rich Expressive Sound
• Excellent Clarity
• Made in California, U.S.A. Featuring the finest and freshest materials.
• Made from 92% copper, 7.7% tin, 0.3% phosphorus wire

Gauges: .013, .017, .026, .034, .046, .056