A Flail for Soybeans

双節棍
ヌンチャク

A nunchaku is a pair of linked sticks used as a flailing weapon.  The two sticks of the nunchaku were once connected by cords of braided horsehair or human hair, strong enough to stop the slice of a sword.  Most nunchaku movements are large flailing arcs.  Nunchaku can also add extra reach to a thrust or punishing solidity to a punch or back-fist.

The Nunchaku Kata

Kōbu no Nunchaku is the only nunchaku kata.

There are exercises that involve holding a nunchaku in each hand. In that case, in one hand both halves of the nunchaku are gripped and used for blocking while the nunchaku in the other hand is used to flail as usual.