SchmidtDigital 13.5 Gold Plated Finish Thank you for viewing. This is a European shank model with a shallow cup. Inner diameter 18.5mm, throat diameter 4.1mm Although it is listed as a U-cup in the Dolce catalog, it gives the impression of being almost a V-cup. The rim is very smooth and flatter, but it gives a controllable impression. The weight is quite light, but it feels rigid, and I was impressed by the careful cutting. As the impression when I held it, it is a mouthpiece that prioritizes high tones, and the cup is large, so it may be suitable for fine movements. The pitch and the sweet spot for sound are quite unique, and it seems that it did not match the instrument I have. (I only had a Yamaha 87d that could be matched to the European shank, but I couldn't understand the pitch sweet spot well) It might give a different impression when combined with a descant or 103. It might be suitable for chamber music with continuous high tones like Brandenburg. I tried playing the trumpet with an adapter shank, and it sounded like a trumpet. No claims and no returns, but I would love to share the impressions of the usage experience as experience.