Gunbai

A or  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.

During Madara's lifetime, his gunbai was a brown color with three red tomoe. Prior to the Fourth Shinobi World War, Tobi came into possession of Madara's gunbai and painted it white and the tomoe black (red in the anime). Madara's gunbai is a wide fan with tomoe on it and has a long handle with bandages wrapped around the base. It also has a long chain attached to it with Madara's being attached to the handle that appears to have been connected to his kama,   whereas in Tobi's possession, the chain appears to enter his sleeve.

Tobi wields the gunbai predominantly like a flail using the chain attached to guide the fan which he can use as a shield because of its durability, and was able to block a Rasengan from Naruto Uzumaki while in his Nine-Tails Chakra Mode without receiving any noticeable damage.

Utilised Techniques

 * Return of the Uchiha

Trivia

 * In the anime cut-scene of Naruto Shippūden: Ultimate Ninja Storm Generations, Madara is seen using his gunbai to create powerful gusts of wind, capable of blocking projectiles and blowing enemies away, as well as a melee weapon in combination with his kama.