Martin SP Authentic Phosphor Bronze Acoustic Guitar String Set
C. F. Martin & Company
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These strings are engineered with the performer in mind and they will always stand up to rigorous practice and performance schedules. Martin started with their highest tensile-strength core wire, then tin-plate it on all six strings for added corrosion resistance; because what you donât see matters! When coupled with their highest quality wrap wire you get a consistent true tone that you can count on song after song.