The mouthpiece and tone holes are made in a piece of shinodake (small bamboo) (Pleioblastus simonii) which is then wrapped the tube in to (Japanese wisteria) and the inside coated with lacquer to protect it and enhance the sound.
篠竹（雌竹）に歌口と音孔（手孔、指穴）を開け、藤で管を巻き、内面に漆を塗り管内を保護すると同時に鳴りをよくする。