Manufacturer: W.C. Schmidt Model: Bambula TBP5 Inner Rim Diameter: 28.2mm Throat Diameter: 5.9mm New Retail Price: ¥40,700 Box: None ▶ This is a W.C. Schmidt bass trombone mouthpiece. It's a Bambula model in bass trombone size, so the throat diameter is extremely narrow compared to standard bass trombone mouthpieces, allowing for a very crisp sound. ⚠ The shank specifications are unknown. Usually, either 1, 2, or 3 is stamped on it, but this one has no markings. The shank is longer and thicker than that of a typical large shank mouthpiece, so it may be difficult to use unless the instrument has a deep receiver, such as Yamaha or Holton. Please adjust as needed. ▶ It came with an instrument I purchased, but I haven't had a chance to use it, so I'm putting it up for sale. ※ Price negotiations are welcome. ※ There are minor scratches and shank marks from use. Please understand.