Martin MA550T 13-56 Medium Authentic Acoustic Lifespan 2.0 Treated 92/8 Phosphor Bronze Guitar Strings

Martin Acoustic Strings Lifespan 2.0 Phosphor Bronze 13's Treated Strings MA550T Next generation Martin® Authentic Acoustic® Lifespan® 2.0 strings are engineered using a new, patented anti-corrosion treatment only available from Martin. It protects the core and wrap wire to prevent corrosion without compromising tone or feel. Martin's impeccable standards for acoustic guitar tone are embedded in their string design and precision manufacturing process.  Medium .013 .017 .026 .035 .045 .056 190.9 MA550T