Dunlop Zakk Wylde Icon Series Acoustic Guitar Strings have a wide dynamic range, delivering crisp and full sound that allows Zakk to go from soft melodic fingerstyle to hard picked solos without losing detail or clarity. Widely known for his relentless electric guitar assault—Zakk Wylde ' s quieter acoustic side has been well received by critics and fans alike on albums such as Book of Shadows and Hang Over Music Vol. 6. And like all Dunlop Acoustic Strings, Zakk Wylde Icon Series Phosphor Bronze Acoustic Guitar Strings are made of the highest quality wire available and have carefully selected core-to-wrap ratios so that they break in fast and remain bright for a long time. Gauges .012, .016, .024, .032, .042, .054