The 3-Pack D'Addario XTAPB1047 XT Phosphor Bronze 10-47 Acoustic Guitar Strings Sets are high-quality strings specifically designed for acoustic guitars. Made with bronze material and coated with a protective layer, these strings offer a warm and bright tone that is perfect for acoustic guitar players. With a 0.010 gauge and 6 strings included in the set, these D'Addario strings are suitable for a variety of acoustic guitars and are made in the United States.