What episode does Gaara use shikoku spear?

Gaara uses the Shikaku Spear in "Naruto: Shippuden" during the battle against the Akatsuki member Deidara. This technique is showcased in Episode 6 of the series, titled "The Next Step." Gaara utilizes the Shikaku Spear to protect himself and others, demonstrating his mastery over sand manipulation.