.013 .017 .026 .035 .045 .056 - Set / Acoustic guitar

Martin SP Marquis strings are designed for maximum tone and longevity. Ultra-high tensile strength cores resist breaking. Acoustic bronze "nish provides greater string life. The silk wrapping on the end is not only a traditional symbol of quality, but provides tighter seating of the string at the bridge pin and helps reduce wear on bridges and bridgeplates.