ACOUSTIC GUITAR STRING SET: Martin Guitar Authentic Acoustic Lifespan 2.0 acoustic strings are now offered in a box of 25 sets. These bulk strings are packaged in an easy-to-use system and designed for corrosion resistance. Choose between a medium, light, and custom light gauge, and you’ll be ready to rock-n-roll. GUITAR ACCESSORIES: Every guitarist knows that their sound comes down to the strings. These Martin Guitar strings are engineered using a new, patented anti-corrosion treatment only available from Martin. It protects the core and wrap wire to prevent corrosion without compromising tone or feel. Change your Martin strings as often as you like. ROCKIN’ FEATURES: This amazing guitar strings set is just another example of our company’s mission to constantly improve the tone and playability of our guitars. Each set is priced so guitar players can keep a spare set of strings in their gig bag and a few extra sets in the van, in the studio, and at home, making it a great gift for musicians. MARTIN GUITAR PARTS & ACCESSORIES: Martin’s superior guitars and accessories remain the choice of musicians around the world for their unrivaled quality, craftsmanship, and tone. We bring those same standards to these guitar strings. Our attention to little details is what sets us apart.