Martin MA540FX Authentic Flexible Core Medium Phosphor Bronze A/G Strings, 13-56

Martin® Authentic Acoustic® Flexible Core strings are designed to reduce finger fatigue and allow huge bends. Strings Designed by C.F. Martin & Co. to Provide Superior Tone for Your Acoustic Guitar. Strings Subjected to Martin's Rigorous Premarket Testing to Ensure Consistency and Quality.

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