Martin Guitars Authentic Acoustic Flexible Core Strings provide unrivaled quality, craftsmanship, and tone for your acoustic guitar. Designed to produce true, consistent tone, these custom-gauge strings provide excellent tuning stability and playability so your guitar can stand up to rigorous practice and performance schedules. Made from 92/8 Phosphor Bronze, these strings feature a lighter-gauge core wire combined with a heavier wrap wire for a full, balanced tone and excellent playability. 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 phosphor bronze strings can be used for fingerstyle blues, Americana, country, bluegrass, ragtime, and many more styles. With this pack, you'll receive 6 custom-gauge guitar strings designed for optimal playing performance. The low E string measures 0.052", the A string measures 0.042", the D string measures 0.032", the G string measures 0.023", the B string measures 0.015", and the high E string measures 0.011". This total set of custom-gauge strings features a tension of 155.1, making it easy to get a rich, bright tone with an ultra-flexible 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 Flexible Core Guitar Strings are the real deal-not an imitation. Discover your guitar's true voice with this professional-grade guitar string pack.