Martin SP Flexible Core 13-56 Med Phosphor Bronze Acoustic Guitar Strings 550FX Capo a more focused low end

a more focused low end and thicker tone

Referred to by many as "Phosphor Bronze on Steroids

Code: DAB1356

Gauge: 13-56 Medium

These envelopes have VCI technology built into the paper itself

Martin SP Flexible Core 13-56 Med Phosphor Bronze Acoustic Guitar Strings 550FX Capo a more focused low endMartin 6 String SP Flexible Core Acoustic Guitar Strings Gauge: 13 56 (medium) Finish: Phosphor Bronze Guitar: Acoustic 6 String Gauges: . 013 . 017 . 026 . 035 . 045 . 056 Code: MA550FX It isn't just about flexibility; it's about bending the note till it rings true. Martin SP Flexible Core strings marry our thinnest core wire to our standard tensions. Our SP Flexible Core strings feel soft to the touch, making them ideal for beginners. But don't be