Martin 41Y18MA545 Authentic SP Phosphor Bronze Acoustic Guitar Strings, Light/Medium

Martin® Authentic Acoustic® Superior Performance SP® Strings feature longer-lasting tension, six tin-plated core strings for a fuller, more balanced tone, faster response, and increased tuning stability. Martin’s impeccable standards for acoustic guitar tone are built into their exacting string design and manufacturing process. That’s why Martin produces its own brand of strings.

Characteristic:

• Wire Size: .0125, .0165, .0255, .0335, .0435, .055