AR Resonance Euphonium Mouthpiece Backbore. Made of brass, it tends to be much easier to control compared to different materials such as bronze. Interestingly, combining it with a bronze top, for example, can be expected to bring out the best of both. We hope you will consider this opportunity. Contents: Euphonium large shank mouthpiece Backbore Material: Brass Finish: Gold Plated Size: L size (L72E) *Boxes and leather cases are not included. *As you can see from the photos, this product has a separate top and backbore, and it is possible to use backbores of each size (S, M, L) for one top. This time, L size is for sale. Since it has only been played once, it is basically like new, but strictly speaking, it is used, so please consider purchasing only if you understand that. Thank you for your consideration. Reference: Please refer to the information from the domestic general agent for the current new price and explanation. *This product is priced at around 40,000 yen including tax if it is new. https://trumpet-store.jimdofree.com/a-r-トロンボーン他マウスピース/ #Mouthpiece #Backbore Price reduced from the initial listing.