Quake Breakers

The Quake Breakers were twin chainsaw-like weapons that were Onua Nuva's Toa Tools. He used them to channel his Earth Elemental Energy through. They could also dig through earth and rock easily, and could even attach to his feet to serve as all-terrain treads.

He later replaced them with his Multi-Resistance Shield when he received his Adaptive Armor from Artakha.

Trivia

 * The Quake Breakers, in spite of being Onua Nuva's primary weapons, only made two brief appearances in BIONICLE: Mask of Light.