Since there was no "knot" at the end of the classical guitar string that would hold it inside the guitar, I had to return them. At a music store, I did verify that classical guitar strings should have this "knot" so the guitar can be strung and tuned properly.
Now, I'm worried about the Esteban guitar that I ordered for my daughter for Christmas. I hope that the quality is there once I receive it. Not liking the fact that it was made in China.