Martin MA150T Acoustic Lifespan 2.0 Treated 80/20 Bronze Strings 13/56 Medium

Features: Strings designed by C.F. Martin & Co. to provide superior tone for your acoustic guitar Treated with Martin's Cleartone proprietary formula for longer life and great tone Highest-quality materials mean outstanding tone, response, and durability Strings subjected to Martin's rigorous premarket testing to ensure consistency and quality Gauges: .013, .017, .026, .035, .045, .056 Core Material: Steel Coated New, unopened package. No tags. Buy from me. I'm a small business. And very nice. :)