Martin Retro acoustic guitar strings are crafted from a long-lasting proprietary nickel-based Monel alloy blend that mellows quickly to a warm vintage tone that brings out the unique, woody sounds in your guitar. The qualities of this unique alloy give the strings a soft touch that make bends and slides feel effortless
Ideal for a sweet, vintage tone on both vintage and modern guitars.
MM12 Light: .012 .015 .025 .031 .041 .054
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