Thanks to innovative materials and production methods the impressive tonal potential of Pirastro Perpetual viola strings provide a tonal fullness and radiance with a reliability that allows the player to trust in the strings tuning stability immediately upon installation. Designed for volume, carrying power and focused projection, the clarity of sound remains just as powerful from extreme squeals to the most sensitive whisper. Perpetual viola strings react to the finest nuances in bow speed with an extreme range of dynamics and expression. The Perpetual viola C string features a rope core with tungsten wrap and a ball end.