The sonic shield was the tool carried by Kohrak-Kal.1, 2, 3 It could create a sound barrier that could repel most forms of attack or cause objects to vibrate until they shattered.2, 3 The sonic barrier created by this shield responded to blows with a sound so loud it could stun a Toa Nuva.2, 3, 1 The sonic shield could form a barrier of solid sound, make objects stress and shatter, or create solid objects made of sound.4