Martin Authentic Acoustic SP 13-56 Medium 80/20 Bronze Acoustic Guitar Strings Elastic String Wrap: Nickel-plated steel outer

String Wrap: Nickel-plated steel outer wrap on tinned Mandolin wire hex-core

The DCT cryogenic freezing process gives our Boomers® extra brightness

Guitar: Electric 7 String

Gauge: 10-52

Martin Authentic Acoustic SP 13-56 Medium 80/20 Bronze Acoustic Guitar Strings Elastic String Wrap: Nickel-plated steel outerMartin 6 String Authentic Acoustic SP Acoustic Guitar Strings Gauge: 13 56 (medium) Finish: 80 20 Bronze Guitar: Acoustic 6 String Gauges: . 013 . 017 . 026 . 035 . 045 . 056 Code: MA150 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