Martin MA550S Silked Phosphor Bronze 92/8, Medium 13-56 Acoustic Guitar Strings

Martin Authentic Acoustic Marquis Silked strings feature a soft silk wrap that prevents wear and tear on the bridge holes and bridge plate as you play. The added thickness also ensures that bridge pins will stay locked in place, even in older bridges with worn holes.

Gauge: Medium
E: .013
B: .017
G: .026
D: .035
A: .045
E: .056
Tension: 190.9