This is the light version of the signature model tuba mouthpiece by A.v. Puttkamer, tuba player of the Berlin Philharmonic, out of the light and heavy versions. For F and Eb tubas, it has a slightly deep cup and a well-balanced design. It hasn't been used much, so there are minor scratches, but no dents on the shank. Please understand that this is a used item. Rim inner diameter: 31.8mm (actual measurement) Throat diameter: 8.2mm (actual measurement) Weight: 206g (light) Cup: Deep U/V hybrid cup Shank: American * Reprinted from the Tuba Man Plus website. The BS NHK broadcast a video of Kazuki Yamada's Berlin Philharmonic debut, and there were several close-ups of Mr. Puttkamer. Although it was a B♭ tuba, the video showed him using this model. Please take a look if you are interested.