This is a silent koma (bridge) for practicing Tsugaru-jamisen. You will be able to practice without making noise, even in your room. There are some scratches on the surface due to use, but there is no problem with continued use. Thank you for your understanding. The following is a quote from the product's website: 1. It has a sufficient soundproofing effect, allowing you to practice Tsugaru-jamisen without disturbing those around you. 2. You can perform the unique forward and backward bachi (plectrum) techniques of Tsugaru playing, and your little finger will not hit the koma, especially when playing the backward bachi. 3. You can choose the height of the koma that suits the player. 4. The sound of the bachi when striking the strings is reduced. 5. The volume during practice can be adjusted, and good sound quality can be obtained. 6. It is lightweight and can be attached to the shamisen with one touch. Thank you.