Martin Authentic Acoustic Flexible Core Guitar Strings Phosphor Bronze - (MA540FX - Tommy's Choice) Light 12-54

Martin® Authentic Acoustic® Flexible Core strings are designed to reduce finger fatigue and allow huge bends. They feature a lighter gauge version of our Superior Performance core wire combined with heavier wrap wire to deliver a full and balanced tone with increased flex and playability. Our impeccable standards for acoustic guitar tone are embedded in our string design and precision manufacturing process.