The nunchaku (Japanese: ヌンチャク Hepburn: nunchaku, often "nunchuks","chainsticks", "chuka sticks" or "karate sticks" in English) is a traditional Okinawan martial arts weapon consisting of two sticks connected at one end by a short chain or rope. The two sections of the weapon are commonly made out of wood, while the link is a cord or a metal chain. The nunchaku is most widely used in martial arts such as Okinawan kobudō and karate, and is used as a training weapon, since it allows the development of quicker hand movements and improves posture. Modern-day nunchaku can be made from metal, wood, plastic or fibreglass. Toy and replica versions made of polystyrene foam or plastic are also available. Possession of this weapon is illegal in some countries, except for use in professional martial art schools.
The exact origin of nunchaku is unclear. Allegedly adapted by Okinawan farmers from a non-weapon item, it was not a historically popular weapon because it was ineffective against the most widely used weapons of that time such as samurai swords, and few historical techniques for its use still survive.
In modern times, nunchaku (Tabak-Toyok) were popularized by actor and martial artist Bruce Lee and his martial arts student Dan Inosanto, who introduced this weapon to the actor. Another popular association in modern times is the fictional character Michelangelo of the Teenage Mutant Ninja Turtles franchise. Organizations including the North American Nunchaku Association, World Amateur Nunchaku Organization, Fédération Internationale de Nunchaku de Combat et Artistique, World Nunchaku Association, and International Techdo Nunchaku Association teach the use of nunchaku as a contact sport.