Thank you for viewing. This is a Yamaha trumpet mouthpiece, model "11B4". It came with the instrument when I purchased it, but I am selling it because I use a different one. It's in like-new condition, having been test-played only a few times. Model Number: YAMAHA 11B4 Condition: Almost no shank scratches, and both the rim and cup are in very clean condition. Features: Standard and versatile, ideal for beginners and those who want to play high notes with ease. Cleaned and disinfected. Please understand that this item has been stored at home.