Martin MFX640 Light Strings
Martin FX Flexible Core 80/20 Bronze Strings utilize an advanced thin core wire to increase flexibility and improve sustain without sacrificing tone, durability or playability. They are made to deliver greater player control with sharp attack and improved harmonic sustain. 80/20 Bronze 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 but mellow over time. String gauge: E - .012, B - ....
