3-Pack! Martin Acoustic SP Guitar Strings Phosphor Bronze 13-56 Medium MA550

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. Our impeccable standards for acoustic guitar tone are embedded in our string design and precision manufacturing process. That's why we make our own. Model: MA550 92/8 Phosphor Bronze Medium: .013 .017 .026 .035 .045 .056 Tension: 190.9 3 Full Sets