Martin M550 Phosphor Bronze Acoustic Guitar Strings are made with a unique composition to give brilliance, clarity, and longevity of sound. The Phosphor Bronze winding alloy is ideally suited for making strings that have dee...

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Martin M550 Phosphor Bronze Acoustic Guitar Strings are made with a unique composition to give brilliance, clarity, and longevity of sound. The Phosphor Bronze winding alloy is ideally suited for making strings that have deep, rich basses and clear, bright trebles.

  • Gauges: 0.13 - .056
  • Bronze alloy for brilliance and long life
  • Gauges: 0.13 - .056
  • Bronze alloy for brilliance and long life

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