Nunchaku

An oriental weapon conisisting of two equal lengths of wood, metal, ect. that are connected together by a ball-bearing chain or a rope/cord. Both ends of this weapon can be used as the handle.

These weapons are typically used in martial arts for forms and training purposes. They are also widely used by ninja, mostly for show.

http://upload.wikimedia.org/wikipedia/commons/7/7c/Nunchaku.JPG