This is a Bruno Tilz D4 mouthpiece. I purchased it quite a while ago and used it for a while. It has quite a few scratches and dents, but there isn't much wear on the shank. The plating is still in good condition. It feels like it fits the embouchure well, and I feel like it reduces missed notes. That's just my personal impression... Personally, I felt the high notes were a bit harsh. Cup inner diameter: 17.5mm Bore: 4.0mm Depth: Medium Rim: Medium wide There is no box, so I will pack it carefully with bubble wrap before shipping. Thank you for your consideration.