The Martin M530 Extra Light Acoustic Guitar Strings Phosphor Bronze - These phosphor bronze wound strings have a warmer, earthier tone than Martin's standard bronze strings, and tend to be a bit longer lasting too.
The Martin M530 Extra Light Acoustic Guitar Strings Phosphor Bronze for acoustic guitar.* Full set of phosphor bronze / steel strings from the world's most famous acoustic guitar maker.
* Extra Light - Gauge 10, 14, 22, 30, 39, 47.