Detail 01
12-string acoustic guitar set
The set is designated for 12-string acoustic guitar.

Independent shopping perspective
Martin MA500FX Flexible Core is a light-gauge phosphor bronze set for 12-string acoustic guitar. Its high-tensile-strength core wire and high-quality wrap wire are paired with the Flexible Core design, which emphasizes a soft feel, control, and reduced finger fatigue. That makes it a practical choice for 12-string fingerstyle work and note bends when you want the handling focus of Martin’s Flexible Core construction in a light-gauge set.

Strong match
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
The set is designated for 12-string acoustic guitar.
Detail 02
This version is the light-gauge MA500FX set.
Detail 03
This is the phosphor bronze version of the Flexible Core set.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
It is a 12-string acoustic guitar set.
It is light gauge.
It is described as ideal for fingerstyle playing and note bending, with reduced finger fatigue.