Martin MA240 12-56 Bluegrass 80/20 Bronze Acoustic 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: Bluegrass
E: .012
B: .016
G: .025
D: .035
A: .045
E: .056
Tension: 179.8