GRIEGO BB3 BT (Large Bore) Silver-plated finish Brian Bowman Model List price: ¥36,300 (tax included) Although details are not officially released, the rim inner diameter is said to be between a GRIEGO mouthpiece 6.5 and 7. *This Bowman model is available in three shank sizes, and this product is the "large bore" model. It has an easy-to-handle shallow cup and a narrow throat. Recommended for those who struggle with sustaining phrases due to not needing much air, and for those who want to play higher notes more easily! The mouthpiece itself has weight, making it easy to create resistance, resulting in a rich sound pressure. Purchased at the end of December 2025, but I am selling it because it no longer fits after upgrading my instrument in March 2026. (The instrument used was a YAMAHA Custom 842S) I selected this from a considerable number of mouthpieces as shown in the images! I placed particular emphasis on resonance and responsiveness when selecting. As imports from overseas are infrequent, it is difficult to find in stores, and it is rare to have a selection to choose from, so please consider this offer! *However, please understand that compatibility is individual. This is a used item, so please adhere to the 3N (No returns, No refunds, No complaints) policy.