- ACOUSTIC GUITAR STRING SET: Martin Authentic Acoustic superior performance strings are now offered in a bulk box. Each box of bulk string contains 25 sets and is packaged in an easy-to-use system and is designed for corrosion resistance. Choose between a medium, light, and custom light gauge, and you’ll be ready to rock-n-roll.
- Next generation Martin® Authentic Acoustic® Lifespan® 2.0 strings are engineered using a patented anti-corrosion treatment only available from Martin. It protects the core and wrap wire to prevent corrosion without compromising tone or feel. Our impeccable standards for acoustic guitar tone are embedded in our string design and precision manufacturing process. That’s why we make our own.
| Custom Light | .011 | .015 | .023 | .032 | .042 | .052 | 155.1 | MA535T-25 |
| Light | .012 | .016 | .025 | .032 | .042 | .054 | 168.5 | MA540T-25 |
| Medium | .013 | .017 | .026 | .035 | .045 | .056 | 190.9 | MA550T-25 |