Bala

Bala (虚弾 (バラ), bara; Spanish for "Bullet", Japanese for "Hollow Bullet") is an Arrancar-exclusive technique that hardens the user's Reiatsu and releases it like a swift blast of spiritual energy. While the technique is not nearly as powerful as a Cero, its speed is 20 times faster and allows for it to be fired in quick repetition. A Bala's speed and power varies with the Arrancar using it; while the power of Yammy's Bala is equated with a powerful punch, Ulquiorra's Bala is capable of blasting large holes in enemies.