Dunlop Brass Acoustic Guitar Strings are bright and durable. Every set of Dunlop Acoustic Guitar Strings delivers brilliant and rich tone for a dynamic and expressive acoustic experience. The finest wire combined with precise construction produces versatile strings durable enough to withstand hard strumming-and responsive enough for delicate fingerpicking. Chords ring out with great clarity, bass notes growl, and harmonics pop and sing. Dunlop"s formula creates strings that are exceptionally long-lived, they break-in fast and stay bright so you can spend more time playing and less time changing strings. Dunlop 80/20 Brass Light Acoustic Guitar Strings Features: Brass Bright and durable Well-balanced string to string Quick break-in time Extra Light - 10 / 14 / 22w / 30w / 40w / 48w Light - 12 / 16 / 24w / 32w / 42w / 54w Medium - 13 / 17 / 26w / 36w / 46w / 56w