I purchased this from Yamano Music. I am selling it because I no longer have the opportunity to use the instrument. I have only used it a few times, so I think it is almost as good as new. Type02 with screws Retail price: ¥25,000 (tax included) Material: ABS resin, black Features: This is a new type of detachable lip plate that functions as a mute or a volume booster for a flute. This product works by restricting the mouthpiece to reduce the volume and by optimizing the airflow to increase the volume. Due to the nature of the product, individual results may vary depending on how it is played and the settings used, so by getting used to it, you can maximize the original functions of 【didi】. https://www.aiharaflute.jp/volume-adjuster-didi/