Martin MA545 Light/Medium 12.5-55 Phosphor Bronze Guitar Strings

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. Gauge: Light/Medium E: .0125 B: .0165 G: .0255 D: .0335 A: .0435 E: .055 Tension: 179.3