Martin Guitars Era Treated Acoustic Guitar Phosphor Bronze Strings - Medium 13-56

Built to achieve unmatched tone and playability, Martin Era™ strings set a new standard for what a phosphor bronze acoustic guitar string can be. Combining the best technologies from the Martin Strings lineup, Martin Era strings feature a patented Lifespan treatment to protect against corrosion, Flexible Core construction to enhance fretability and comfort, and silk-wrapped ball ends - designed with vintage instruments in mind and as a premium touch that symbolizes Martin's handcrafted string-making history. The Artist Light version was developed in collaboration with six-time GRAMMY® winner Jason Isbell and features a more traditional SP® core to match his signature guitar sound.

Specifications

- Gauge: Medium
- e: .013
- B: .017
- G: .026
- D: .035
- A: .045
- E: .056
- Tension: 190.40
- Model: MP550T