Iron Sand

The Iron Sand is a special technique used by the Third Kazekage, in combination with his unique ability to convert chakra into magnetic forces. The Third studied a host of the One-Tailed Shukaku and learned to imitate the power to control sand. However, when he imitated sand techniques, he used iron powder instead, thanks to his special magnetic powers. He could use it to crush his opponents or even mold the sand into weapons. The Iron Sand can also clot up the joints of puppets, making them unusable in battle as long as the Third Kazekage's magnetic field is in effect.

When the Third Kazekage was turned into a Human Puppet, Sasori gained access to the Iron Sand abilities and imbued the sand with his poison. The puppet was later destroyed by Sakura Haruno and Sasori's grandmother, Chiyo.

As the Third Kazekage's ability to convert chakra into magnetic fields is unique to himself, when his puppet form was destroyed, the Iron Sand technique became lost forever.