XO Mouthpiece 3-Piece Set * 6 1/2AL (Silver Plated) * 5GS (Silver Plated) * 5G (Gold Inner Rim, Satin Cup) * Denis Wick Mouthpiece Case (Black) This "XO-Custom" series was created in collaboration with the staff of Global Co., Ltd., the distributor of XO products, XO trombone players, and Mr. Nakagomi of "Willie's Custom Brass," a mouthpiece maker. Based on the old Bach mouthpieces from the Mount Vernon to Early Elkhart era, these mouthpieces are designed with an ideal mouthpiece design suitable for modern players, and are recommended for all players performing in wind bands, orchestras, etc. They are no longer sold and have become rare mouthpieces that are difficult to obtain. They are in good condition, with no noticeable scratches or dents, and the shank is also in a clean condition. Please check the images. This is a 3-piece set that can be used in various genres and positions, such as orchestra, wind band, solo, and ensemble. I have decided to let them go because I mainly use other mouthpieces. I believe these are very easy-to-play mouthpieces that can accommodate various levels of experience and situations, so please consider this opportunity. Please note that we are not considering selling them separately. They will be carefully packed with bubble wrap and shipped via Yamato Transport. Please understand that these are used items before purchasing. Thank you.