Kunai

A Kunai is a Ninja Weapon used by almost every character in the Naruto Seires, as well is a Shuriken.

Usages
A Kunai can be used for Close-Range, such as stabbing, slashing or thrusting, while also being able to use for throwing at a Target. It's not suppose to be used in such a way, but it's used like a Dagger.

It's also shown that a Explosive Tag can be attached to a Kunai. The tag creates a Explosion and destroys whatever gets caught in the Explosion, and it's commonly refered as a Explosive Kunai.