Martin 3 Pack MA550 Phosphor Bronze Authentic Acoustic Guitar Strings (0.13)

Martin Authentic Acoustic SP strings offer excellent tuning stability, corrosion resistance and great playability!Martin Authentic Acoustic strings are engineered with the performer in mind and they will always stand up to rigorous play and performance schedules. We start with our highest tensile
-strength core wire, then tin
-plate it on all six strings for added corrosion resistance; because what you don’t see matters! When coupled with our high
-quality wrap wire you get consistent tone that you can count on song after song.