Manufacturer: Giddings Webster Model: Alan Bear F Inner Rim Diameter: 32.900mm Cup Depth: Deep Throat: 7.490mm Backbore: - Remarks: Standard Shank It appears that stainless steel and titanium are used for the mouthpiece material. Thank you for viewing. This came with a used B♭ trumpet I purchased. I am selling it because I don't use it. It's a very cute mouthpiece with a bear 그림 on the back. Thank you.