Pirastro Eudoxa Viola String SetPirastro Eudoxa Viola Strings feature a sheep gut core that is finely wound and polished by hand using traditional techniques. The combination of a gut core with fine aluminum and silver winding provides a warm, well balanced tone ideal for orchestral, chamber, and studio performance. Low string tension offers excellent response and comfortable playability. Eudoxa Strings are durable with a round, complex tone quality. A Aluminum wound gut D Aluminum