PT-20

* CUP DIAMETER: 31.8 mm. - Deep - Strongly rounded at bottom
* RIM: 8.2 mm. - Inner and outer rim well rounded with contact point toward the perimeter
* THROAT BORE: 7.8 mm.
* An excellent mouthpiece for F-Tubas, particularly when a full, dark, orchestral sound is desired. Very good low register response, full and resonant mid range.