Purchased at a musical instrument store for 8800 yen. This item improves the sound of a flute. I can feel that the blowing experience has also improved. It will be packed in a dedicated case with a band and then shipped. ↓ Below is a description of the product: Brass This is the most orthodox model, made of brass. It enriches the sound of the instrument, making the connection of notes smoother. It is suitable for all genres, so we recommend starting with brass.