Final price reduction: 10,000 yen Tuba mouthpiece Perantucci PT-89 Quoting from the following site: PT-89 Cup characteristics: Diameter 32.0mm, deep, and very rounded bottom. Rim characteristics: Width 8.5mm, quite rounded on both the inside and outside. Throat bore: 8.35mm The PT-89 model is well-suited for CC/BBb tubas, producing a very solid core sound that is thick and heavy. The cup diameter is smaller than large mouthpieces like PT-50 and PT-88, making it easier to use for players who find those too large. This mouthpiece is recommended for professional players who want to play F tuba and CC or BBb tuba with a single mouthpiece. A popular mouthpiece that combines the rim of PT-84 and the cup of PT-90. Please see the images for scratches and stains. Please comment before purchasing. No returns or refunds. I will make every effort to ensure your satisfaction.