I'm selling this because I haven't had much opportunity to use it since I bought it, and I think it would be more useful for someone else. I plan to list it until the beginning of December. This is a GR trumpet mouthpiece. It's equivalent to a Bach 3-5, with a semi-flat rim of medium thickness and a medium to slightly shallow bowl cup. It produces a thick, slightly straight, bright sound, allowing for responsive playing in the high register without discomfort, and features a uniform sound across all registers and excellent intonation balance. There are some shank scratches from use, but they do not affect the playing or tone. It can be used in a wide range of genres, including classical, jazz, and pop. I welcome questions from those who are considering purchasing, including those who are ready to buy immediately.