Every set of Dunlop Acoustic Guitar Strings delivers brilliant and rich tone for a dynamic and expressive acoustic experience. These Medium Light 80/20 Brass strings are especially bright and durable. 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.