Mouthpieces for F tuba and E♭ tuba Selling due to instrument replacement. Used for about six months, so there are some signs of use and dirt, and I'm selling it at a relatively low price. For F tuba, a classic of classics. Recommended for those who want to try it. *** The PT-64 model produces a clear, core sound, creating vibrant, emotionally moving, beautiful tones. It is versatile, and when combined with a CC tuba, it creates an extraordinary tone, but especially when combined with an F tuba or E♭ tuba, it produces a grand, large sound, making it effective for solo performances with ensembles or for playing high-range orchestral pieces.