These are sanba (Okinawan castanets) made from high-quality black wood. Brand new, unused. Includes a free sanba storage pouch. These sanba are made from the heartwood of black wood, which is also used for high-quality sanshin (Okinawan three-stringed instrument), other instruments, and fine furniture. This is a rare, high-quality wood that can only be used as a material if the tree is over 100 years old. The three plates are clacked together to produce a beautiful sound with the unique weight of the black wood. *Because natural wood is used, the grain and color may vary slightly from piece to piece. *A free sanba storage pouch (black) is included.