1、The viola string adopts high quality steel material, solid, firm and durable, ensures a long time service. 2、Reinforced steel string, produces soft, sweet and fully connected sound. 3、Four strings per set, you can replace the whole strings of a viola. 4、With silver plating, the string looks beautiful and also sounds warm and tenuous. 5、Easy to install. Professional musical instrument accessory for viola. Features: 1.The viola string adopts high quality steel material, solid, firm and durable, ensures a long time service. 2.Reinforced steel string, produces soft, sweet and continuous sound. 3.Four strings per set, you can replace the whole strings of a viola. 4.With silver plating, the string looks beautiful and also sounds warm and tenuous. 5.Easy to install. Professional musical instrument accessory for viola. Specifications: Material: Steel Weight: 23g Color: Silver Size: Approx. 10*10* 0.5cm/ 3.9* 3.9* 0.2in Packing List: 4*Strings  Strings size: Type E-1st A-2nd D-3rd G-4th diameter(mm) 0.35 0.5 0.73 0.1 diameter(in) 0.014 0.02 0.029 0.039