Super-Sensitive Red-Label Viola Strings are among the most popular strings recommended by teachers for students. Being economically priced, yet durable, Red Label Viola Strings are made with high quality winding and core materials that provide the durability and dependability required by school orchestra programs. Red-Label strings are available in 6 different sizes. Even younger students can get the right size strings for their instruments rather than fitting larger sized strings on a smaller violin. Made in USA!!!!