Yari no kakuchō

Yari no Kakuchō (槍の拡張; Literally meaning "Extending Spear") is a relatively small spear wielded by Sasuke Namikaze. Sasuke retrieves the weapon by pushing his hand on his lower stomach, causing Yari to rise handle first.

The spear's primary ability allows it to extend to extreme lengths much like the Sword of Kusanagi, and can be fueled by chakra to increase its sharp edge and durability. The limits of this are currently unknown.