Martin SP Flexible Core 13-56 Med Phosphor Bronze Acoustic Guitar Strings 550FX Tin String Material: Pure Nickel Flatwound

String Material: Pure Nickel Flatwound

High energy at your fingertips

Finish: Treated Nickel Round Wound

The K3 coating is the first coating that players report

2213 Mega Slinky 105-48

Martin SP Flexible Core 13-56 Med Phosphor Bronze Acoustic Guitar Strings 550FX Tin String Material: Pure Nickel FlatwoundMartin 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