Super-thin, flexible wire core design provides more sustain without dealing a blow to your tone.
- Gauges: .010/.010 .014/.014 .025/.010 .032/.012 .042/.018 .054/.027
Advanced thin wire core
Martin FX700 Custom Gauge Flexible Core 12 String Acoustic Guitar Strings
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.
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