【willie's Yamanashi JAPAN STEINER GFM 5】 This is a mouthpiece from willie's, which boasts high quality and a wide lineup, mainly for trombones. This is the first mouthpiece in the series created in collaboration between Peter Steiner, a brilliant figure in the contemporary trombone world, and willie's. The rim, which is slightly flat with sufficient width, offers excellent stability and flexible control. Furthermore, it is designed with the Vienna sound in mind, resulting in an extremely colorful and brilliant tone. The size is 5 (inner rim diameter: 25.55mm, throat diameter: 7.14mm, cup diameter: Medium), which is about the same size as a Bach 5G. There are some minor scratches, but there is no damage that would interfere with use.