Horn Mouthpiece Romera Brass Zen x Ben This is the signature model by Tsutomu Maruyama, an American shank Solo/Chamber model. I purchased it, but I haven't used it much, so I'm putting it up for sale. I apologize, but it doesn't come with the original box, so I will ship it in a different box. 《Solo/Chamber Model》 A light model that offers the best possible response. It works exceptionally well with single horns and descant models, and matching it with consideration for balance will lead to even more effective playing. This model excels in smooth phrasing and dynamic changes, and the high-note response and control are also attractive features of this mouthpiece. 【Solo/Chamber】Inner diameter 18.00mm / Throat diameter 4.0mm / American shank