Martin Retro strings are crafted from a long lasting proprietary nickel alloy that will mellow into a warm vintage tone.
Naturally corrosion resistantSteel core with a nickel copper wrap
Medium 6 String Acoustic Retro Guitar Sting Set
6 String Acoustic Guitar StringsMartin® Retro SetMedium Gauge .013, .017, .026, .035 .045, .056Retro Steel Core with Nickel copper wrapDesigned for excellent warm vintage tone, clarity and response.
Martin® and other brand names are trademarks C.F. Martin & Co., Inc. and of their respective owners.