Eric Clapton loves his Martin acoustic guitar strings so much that he wanted to endorse them. Martin is proud and honored to make the strings that Eric trusts to produce his legendary guitar sounds. What does Eric have to say about Martin Strings? "When I play acoustic guitar, whether in a studio or on stage, Martin Strings are my choice. They deliver the sound that I demand."  Available in light and medium gauge 92/8 Phosphor Bronze. Eric Clapton strings are approved for studio and stage, engineered to resist corrosion with legendary tone and playability.