Bass Trombone Mouthpiece Pickett Brass 1.75 Size: 1.107 inch (approx. 28.1mm) From the Pickett Brass HP: "While maintaining excellent balance and responsiveness, it produces a compact sound." Currently priced at $195, I believe it sells for over 30,000 yen in Japan. My personal opinion: I think the cup depth is standard for a bass trombone. Because the throat is narrow, it responds well for its weight and produces a compact and bright sound. The rim is flat, so the feel is slightly smaller than the numbers suggest. People who use a 1-1/2 size might find it suitable. There are no major scratches or dents, but there are minor scratches and dullness from use. Also, since there is no case, it will be shipped in the case shown in photo 5. Thank you for your understanding.