Description : Thomastik-Infeld Plectrum Acoustic Guitar Strings are soft sounding and have low tension on the bottom end. The plain strings are made of brass coated steel. The wound strings have a silk inlay combined with a highly flexible steel core. A, D, and G strings are polished bronze flatwound, while the low E is polished bronze roundwound. Gauges: .011-.011 .014-.014 .019-.009 .027-.012 .036-.016 .050-.022.