Forenza Viola Strings are constructed from a steel core that is durable & not affected by changes in humidity & temperature, unlike gut core strings. Perfect for student players, these strings are a great budget option for young Viola player, producing a warm sound and providing good bow response. Good quality student viola strings for full size instruments. Perfect replacement strings for any brand of student viola. Nickel silver wound steel core strings. Model fa14vaa. Batteries (not included). Size H1.3, W10.3, D10.7cm. Weight 0.01kg. Manufacturers 2 year guarantee.