Martin M180 - 80/20 12-str.Acoustic Bronze 010-047

No bells. No whistles. Just pure, singing tone. Martin Traditional strings are our flagship line that stands the test of time. Tried and true, they are designed to deliver consistent quality and tone with every set. Great for daily play and appropriate for all skill levels, our traditional strings are available in 80/20 Bronze, 92/8 Phosphor Bronze and Silk & Steel Folk.Martin Traditional 80/20 Bronze acoustic guitar strings are made with tin plated steel core wire and bronze wrap wire.   Weight E B G D A E Tension Model Extra Light .010 .014 .023 .030 .039 .047 130.2 M170 Custom Light .011 .015 .023 .032 .042 .052 147.6 M175 Light .012 .016 .025 .032 .042 .054 160.5 M140 Bluegrass .012 .016 .025 .035 .045 .056 176.9 M240 Medium .013 .017 .026 .035 .045 .056 181.1 M150 Extra Light 12-String 1-6 .010 .014 .023 .030 .039 .047 245.7 M180 Extra Light 12-String 7-12 .010 .014 .010 .012 .018 .027 245.7 M180 Light 12-String 1-6 .012 .016 .025 .032 .042 .030 312.0 M190 Light 12-String 7-12 .012 .016 .010 .014 .020 .054 312.0 M190 Extra Light - 3 Pack .010 .014 .023 .030 .039 .047 130.2 M170PK3 Custom Light - 3 Pack .011 .015 .023 .032 .042 .052 147.6 M175PK3 Light - 3 Pack .012 .016 .025 .032 .042 .054 160.5 M140PK3 Medium - 3 Pack .013 .017 .026 .035 .045 .056 181.1 M150PK3