Length: Approximately 69cm Number of teeth: 72 This is an "ita-sasara" (board sasara), a traditional Japanese percussion instrument. It is also known as an instrument used in the folk song "Kokiriko-bushi" from Toyama Prefecture. It is a wooden Japanese instrument with a unique shape. Overview: It has a structure in which many wooden boards are connected with strings. How to play: By holding both ends and shaking it, or by rubbing the boards together, it produces dry sounds like "shan-shan" or "ja-ja." Uses: It is mainly used for accompaniment in folk songs and Bon Odori dances, and for keeping rhythm.