Martin SP Extra Light Phosphor Bronze Authentic Acoustic Guitar Strings - 10-47

Martin MA530S Marquis Silked Phosphor Bronze Authentic Acoustic Guitar Strings Extra Light 10-47 These strings are engineered with the performer in mind and they will always stand up to rigorous practice and performance schedules We start with our highest tensile-strength core wire, then tin-plate it on all six strings for added corrosion resistance; because what you don't see matters!.