Gunbai

A gunbai (軍配; Literally meaning "army arrangement") or gunbai uchiwa (軍配団扇; Literally meaning "army arrangement fan") is a non-folding fan, usually made of wood. It was used in ancient Japan by samurai officers to communicate with their troops. Nowadays, it is used by referees of professional sumō matches.

Madara Uchiha and have been seen wielding a large gunbai, about 3/4 of their height and almost of their width, with the pole being twice that length. Madara's had a chain attached to the handle that appears to have been connected to his kama, whereas Tobi's chain appears to enter his sleeve. Izuna Uchiha was said to use a small gunbai.

Madara uses his gunbai to create gusts of wind, block projectiles and as a melee weapon in combination with his kama.