A kunai.

Simple Hira Shuriken

A simple hira shuriken.

Bo shuriken

Bo shuriken.

Shurikenjutsu (手裏剣術) is a general term describing the traditional Japanese martial arts of throwing shuriken, which are small, hand-held weapons used primarily by the shinobi (ninja) in feudal Japan, such as metal spikes - bō shuriken, circular plates of metal known as hira shuriken, kunai and knives (tantō).

==Weapon Usage==