Thank you for viewing. I am selling a mouthpiece that I have used for many years, as I no longer have the opportunity to use it. This is a standard model, a versatile mouthpiece from Tilz. It is easy to play both low and high notes, making it an all-around mouthpiece. When I was a student, I often ended up returning to this one even after buying other mouthpieces. It's that stable of a model. It's a very popular product, and it was often difficult to find in stock at stores. If you are having trouble finding the right mouthpiece, why not give this one a try? Specifications: Inner Diameter: 17.5mm Cup Shape: U-cup Depth: Medium Bore Size: 3.8mm Retail Price: 14,300 yen