* CUP CHARACTERISTICS: 32.5 mm. diameter - Deep, very round at bottom.
* RIM CHARACTERISTICS: Width 8.0 mm. -Small with sharp inner rim.
* THROAT BORE: 8.0 mm.
* Model PT-70 is a fairly deep mouthpiece with a bell -shaped cup which provides a broad sound with quick, even response. It is a comfortable and powerful mouthpiece which features a brilliant sound and is highly recommended for any tuba.