【Price reduced, please consider!】 Denis Wick Euphonium mouthpiece, the ULTRA-X SM3X (silver) supervised by Steven Mead. I used it in conjunction with the SM3U, but I'm selling it because I don't use it as often anymore. Compared to the SM3U, the bore size is larger, but the cup is slightly shallower, so the 3X has better breath support. Or rather, the 3U takes too much breath, haha. The rim is flatter and has a sharper edge than the 3U, so the sound starts clearly. Although the inner rim diameter is large at 26.40mm, the shallow cup allows for good high-range notes. It produces a brighter tone than the SM3U, so I used it for pop music like the New Sounds series. The original purchase price was 25,410 yen. There are scratches from use, but there are no major scratches, dents, or shank distortions. It is in relatively good condition, but please understand that it is a used item. It will be shipped in its original box. Instant purchase without comment is also welcome.