Martin MA540 Light 12-54 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
E: .012
B: .016
G: .025
D: .032
A: .042
E: .054
Tension: 168.5