The nunchaku (Japanese: ヌンチャク, sometimes dual-section stick, nunchuks is a traditional East-Asian martial arts weapon consisting of two sticks (traditionally made of wood), connected to each other at their ends by a short metal chain or a rope. It is approximately 30 cm or 12 inches (sticks) and 2.5 cm or 1 inch (rope). A person who has practiced using this weapon is referred to in Japanese as nunchakuka (ヌンチャク家, nunchakuka).
忠義 on the stick means LOYALTY
The nunchaku is most commonly used in Okinawan kobudō and karate, but it is also used in Korean hapkido and eskrima. (More accurately, the Tabak-Toyok, a similar though distinct Philippine weapon, is used, not the Okinawan nunchaku). Its application is different in each style. The traditional Okinawan forms use the sticks primarily to grip and lock. Filipino martial artists use it much the same way they would wield a stick: striking is given precedence. Korean systems combine offensive and defensive moves, so both locks and strikes are taught. Other proprietary systems of Nunchaku are also used in Sembkalah (Iranian Monolingual Combat Style), which makes lethal blows in defense and assault.