A high quality Nylon tie end classical string. Good for all applications, whether a student just learning, or the teacher instructing. Gauge: E-1ST Package: 1 Single String S.I.T. ( Stay In Tune )… It is our goal that you will always be in tune if you are using any of our products. S.I.T. Strings was founded on a belief that a guitar string is more than just an accessory of little importance, but rather an integral part of a musicians sound and voice. That is why, since 1980, we have been manufacturing strings one at a time, all here at the S.I.T. Strings factory in Akron, Ohio USA.