Thank you very much for viewing. This is a mouthpiece with an interesting concept, "for sousaphone," released by Perantucci, the world's most popular mouthpiece brand. It combines a large inner rim diameter with a rim that provides a quick response, allowing for performance even with slight position adjustments. Furthermore, the use of a heavy-type blank ensures the projection of sound required outdoors, allowing the sound of the sousaphone to be delivered clearly even in a wide field. Initially considered a mouthpiece for sousaphone, its high basic performance led to a surge of artists playing it with regular tubas, and it has now secured a position as a quick-response megatone-type mouthpiece. It is a mouthpiece with a shape similar to the PT-48 and other Helberg types. It is a model that is, so to speak, an extension of a regular mouthpiece, making it suitable for expressing subtle nuances. However, because the inner rim is round, it is resistant to position shifts, and the idea for sousaphone use is also incorporated into the model. Inner rim diameter: 33.0mm (actual measurement) Throat diameter: 8.3mm (actual measurement) Although unused, the box has some damage. For your reference, the current list price is 22,000 yen (including tax). Thank you for viewing.