Pirastro Tonica Violin StringsPirastro Tonica Violin Strings offer a big, powerful tonal volume. These synthetic nylon core strings are made with extremely small and flexible mono filaments wound with fine aluminum and silver. The nylon core offers a warm tone with no metallic sound. These responsive strings can be played immediately after stringing. E Aluminum A Aluminum D Silver G Silver Features: Tonica strings have a core made from nylon. They produce a lively well rounded