The Rotosound RS2001 for viola is a high-quality and durable single string. With a gauge of .014" (0.36 mm), the A1 string produces a clear and warm sound, making it ideal for a wide range of musical styles—from classical to jazz. It guarantees long life and stable tuning. Known for precision manufacturing and consistent quality, Rotosound makes the RS2001 an excellent choice for both professional violists and aspiring students alike. Perfect your tone with the reliable Rotosound RS2001 A1 string.