Super-thin, flexible wire core design provides more sustain without dealing a blow to your tone.

The Martin FX700 Custom Gauge Flexible Core 12-string acoustic guitar strings use an advanced thin wire core wire to increase flexibility and improve sustain without sacrificing tone, durability, or playability.

Martin FX700 Custom Gauge Flexible Core 12 String Acoustic Guitar Strings Features:

• Gauges: .010/.010 .014/.014 .025/.010 .032/.012 .042/.018 .054/.027
• Tensions: 275.3
• Advanced thin wire core

Enjoy the sound and benefits of playing with these special guitar strings. Order today!