OKINAWAN KOBUDO is the art of the weapons found in the Ryukyu Islands located in what is now southern Japan. Bo, sai, tonfa, nunchacku and kama are the weapons some say were developed from common hand tools used by the Okinawans. Others say they're based on weapons found in southern China.
Okinawan weapons have been an adjunct to karate training since the beginning of this century. Kobudo weaponry is used to help condition the hands, wrists and forearms, letting the karate-ka develop a powerful grip that amplifies any grappling technique, and builds the strength to resist or deflect an attacker's locks. The longer weapons also help develop precision, faster reflexes and a heightened spatial awareness.