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Martin Acoustic Guitar Body (M540)
Gauges: .012 - .054
Bronze alloy for brilliance and long life
Martin M540 Phosphor Bronze Light Acoustic Guitar Strings are made from 92/8 composition alloy to give brilliance, clarity, and longevity of sound. The Phosphor Bronze winding is ideally suited for making strings that have deep, rich basses and clear, bright trebles.