I purchased this about four years ago, but I haven't used it much, so while there are some scratches, I think it's in good condition. HR-7C AX Gold Plated, for European-Axial model Inner rim diameter: 17.200mm Cup depth: Medium Throat diameter: #16 (4.50mm) Backbore: HR-ML Rim width = 3.650mm / Rim shape = Slightly rounded Rim apex balance = 41% / Rim bite = Sharp This model has a slightly smaller inner rim diameter than the HR-5C AX. While retaining the rich resonance of the HR-5C AX, it also makes it easier to play in the high register. It works well with both large and small bell instruments, making it an all-around mouthpiece. Equivalent to other brands: Bach 11 https://www.bestbrass.jp/mouthpiece/mp_line-up.php