Martin MA540T Authentic Acoustic Lifespan 2.0 Treated 92/8 Phosphor Bronze Guitar Strings - .012-.054 Light

C.F. Martin & Co. designs acoustic guitar strings for excellent tone and durability, using high-quality materials and proprietary treatments.

• The description claims that Martin strings improve longevity and maintain great tone.
• The description claims that Martin strings are treated with a proprietary formula to repel dirt and oil.