Price reduced! Willie's mouthpiece, USHIGAMI1 GP specification. (For large shank) Rim diameter: 26.00 / Throat diameter: 7.05 This is a signature model mouthpiece of professional euphonium player Ryuji Ushigami, and is characterized by its clear sound. Purchased in 2018, and used for only about six months. There was a slight dent in the shank, but it has been repaired and can be used without any problems.