Martin Guitars Authentic Acoustic Lifespan 2.0 Strings provide unrivaled quality, craftsmanship, and tone for your acoustic guitar. Designed to produce true, consistent tone, these extra-light-gauge strings provide excellent tuning stability and playability so your guitar can stand up to rigorous practice and performance schedules. Made from 80/20 bronze, these strings feature a patented anti-corrosion treatment that protects the core and wrap wire from corrosion. This pack of professional-grade guitar strings will last through long jam sessions, late-night campfire songs, and plenty of picking. It's an ultra-reliable set of strings that you can take on tour or keep in the studio.Designed to bring out your guitar's true tone, these 80/20 bronze guitar strings can be used for fingerstyle blues, Americana, country, bluegrass, ragtime, and many more styles. With this pack, you'll receive 6 extra-light-gauge guitar strings designed for optimal playing performance. The low E string measures 0.047", the A string measures 0.039", the D string measures 0.030", the G string measures 0.023", the B string measures 0.014", and the high E string measures 0.010". This total set of extra-light-gauge strings features a tension of 135.8, making it easy to get a rich, bright tone with a softer feel. Add these professional guitar strings to your touring and performing equipment today!Martin Guitar has been producing high-quality, musician-choice guitars and guitar accessories since 1833. The Martin Authentic Acoustic Lifespan 2.0 Guitar Strings are the real deal-not an imitation. Discover your guitar's true voice with this professional-grade guitar string pack.