Thank you for viewing. There are minor scratches and stains, but they do not affect playing. ------- Cup Shape: Deep and very round bottom. Cup Diameter: 32.0mm Rim Shape: Rounded inside and outside. Rim Width: 8.5mm Throat Bore: 8.35mm The PT-89 model is well-suited for CC/BB♭ tubas and produces a very solid core sound that is thick and heavy. The cup diameter is smaller than large mouthpieces like the PT-50 and PT-88, making it easier to use for players who find those too large. This mouthpiece is recommended for players who want to play both F and CC/BB♭ tubas with a single mouthpiece. A popular mouthpiece that combines the rim of the PT-84 and the cup of the PT-90. ----- Source: http://www.japantubacenter.com/tu_mp.htm