The Thomastik Peter Infeld 4/4 Viola String Set features a combination of chrome chrome combo and silver windings for a brighter overall sound and enhanced playing comfort. These strings are ideal for those who wish to concentrate on the sound of their own playing style. These strings deliver unique tones and flexible playability and are suitable for versatile musicians. The strings features ball ends which can maintain their voice over time. For optimum versatility the 4/4 strings features medium tension gauges. The synthetic and steel cores are capable of producing unique tones for an array of musical styles. Finally the 4/4 strings deliver instant bow response as well as dominant tuning ability. Peter Infeld The Peter Infeld Strings by Thomastik offer an array of rich and colourful sounds. Thomastik have created this series to provide players with a wide dynamic range and the ideal combination of power and subtlety. These strings are easily tuned and perform with prompt bow response. Specifications Strings A String: PI21 D String: PI22A G String: PI23 C String: PI24Winding A String: Chrome D String: Chrome Combo G String: Silver C String: SilverTension A String: 8.1kg D String: 6.3kg G String: 5.6kg C String: 5.6kgCore A String: Steel D String: Synthetic G String: Synthetic C String: SyntheticEnd Type A String: Ball D String: Ball G String: Ball C String: Ball