Thank you for viewing! This is a YAMAHA trumpet mouthpiece, model 17B4. It came with the instrument when I purchased it. It has only been used for test playing and is in almost new condition. There are some minor scratches from use, but they are not noticeable and don't bother me. Please note that the outer box is not included. New price: 7,700 yen (tax included) [Specifications] Rim inner diameter: 17.30mm Throat diameter: 3.65mm This is a standard model that is easy to play and well-balanced. Recommended for beginners and as a sub mouthpiece. Instant purchase OK! Feel free to ask any questions.