A Sansetsukon (三節棍, Three-section Staff) is an ancient japanese weapon thats simmilar to apperance to a nunchaku. The staff is broken into three segments that have been chained back together, allowing the wielder greater flexibility, and allows the weapon to be swung rapidly to create a defensive block. A sansetsukon is a very difficult weapon to use efficiently, limiting it's use as a weapon. Shikaku Kakushi is able to use this weapon effectively due to his experience with a variety with weapons.
