I've been using this for two months, but after buying a new instrument, I realized the mouthpiece doesn't fit, so I'm selling it. This model provides very stable low and mid-range tones, and the high notes are not too dark, maintaining a moderate brightness. It's similar to a Bach 4G~5G, leaning towards the 4G, so it's slightly deeper. Original price: 33,000 yen Willie's Yu Tamaki LⅢ Inner rim diameter: 25.95 mm Throat diameter: 7.08 mm Trombone large shank mouthpiece