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Designed to provide the guitarist with unparalleled tone and playability, Martin Era strings set a new standard for what a phosphor bronze acoustic guitar string can be. Martin Era strings combine the best technologies Martin uses in string making with Lifespan coating to protect against corrosion, a flexible Core construction to enhance playability and comfort, and silk-wrapped ball ends. Gauges: .013, .017, .026, .035, .045, .056
