Martin Authentic Acoustic Lifespan® 2.0 Strings 80/20 Bronze - Light 12-54 cable Easily adjusted by spring tension

Easily adjusted by spring tension and two knurled screws

and shimmering modulation as the original

Clear and smooth sound

trimmed out in Rosewood binding is a sleek combination

Martin Authentic Acoustic Lifespan® 2.0 Strings 80/20 Bronze - Light 12-54 cable Easily adjusted by spring tensionNext generation Martin Authentic Acoustic Lifespan 2. 0 strings are engineered using a patented anti corrosion treatment only available from Martin. It protects the core and wrap wire to prevent corrosion without compromising tone or feel. Martin's impeccable standards for acoustic guitar tone are embedded in the string design and precision manufacturing process. Thats why they make their own.