Martin Strings are the acoustic string of choice for musicians around the world. Wound to exacting specifications, you can depend on these strings for tone, brightness and clarity on a daily basis.
These 80/20 bronze strings deliver a superb bright sound. This alloy is comprised of 80% copper and 20% zinc. It is popular for acoustic strings and provides a very brilliant tone when they are initially put on the guitar and mellow over time.
Light: M140, .012, .016, .025, .032, .042, .054.
Medium: M150, .013, .017, .026, .035, .045, .056.