The Gibson acoustic guitar strings are 80/20 Bronze wrapped for bright, crisp tones. Uncoated for exceptional feel and clarity. Developed and tested by Gibson Master Luthiers.
SAG-BRW11 Ultra-Light Gauge: .011 .015 .022 .032 .042 .052
SAG BRW12 Light Gauge: .012 .016 .024 .032 .042 .053
SAG BRW13 Medium Gauge: .013 .017 .026 .035 .045 .056