Martin 12 String Lifespan 2.0 Treated 10-47 80/20 Bronze Acoustic Guitar Strings Tin and phosphor alloy wound over

and phosphor alloy wound over a hex

Code: MA500S

Gauge: 13-56 (medium-light)

There is NO tracking or signature required with either of these services

Gauge: 08-38 (super light)

Martin 12 String Lifespan 2.0 Treated 10-47 80/20 Bronze Acoustic Guitar Strings Tin and phosphor alloy wound overMartin 12 String Lifespan 2. 0 Treated Acoustic Guitar Strings Gauge: 10 47 (extra light) Finish: Treated 80 20 Bronze Guitar: Acoustic 12 String Gauges . 010 . 014 . 023w . 030 . 039 . 047 . 010 . 014 . 010 . 012 . 018 . 027 Code: MA180T Martins next generation Lifespan 2. 0 strings are engineered using a new, patented technology only available from Martin. This technology was developed to protect the core wire and the wrap wire to prevent corrosion