Greg Black 5GSD Regular Gold Plated Regular weight, slightly lighter than Medium weight. Compared to Medium, it offers a slightly more open feel when playing. It has high controllability and gives a good impression of high-range extension, making it recommended for large ensembles such as orchestras, as well as for solo use. This mouthpiece is attractive for its unified sound from low to high ranges. It has a good grip and a stable feel in the mouth. ・Inner cup diameter: Slightly Deeper 5GS 25.8mm ・Cup depth: Medium ・Size: 5GSD I used it a few times after plating, but it didn't suit me, so I'm selling it.