Martin MA240 Authentic Bluegrass acoustic guitar strings 12-56.

Martin MA240 Authentic Bluegrass

Martin Authentic Acoustic Superior Performance SP strings feature higher tensile strength and tin-plated core wire on all six strings that enable a fuller and more balanced tone, quicker response and increased tuning stability. Martin's impeccable standards for acoustic guitar tone are embedded in their string design and precision manufacturing process.

Specifications:

• Gauges:.012 .016 .025 .035 .045 .056
• Tension: 179.8