The Master Bolt is the symbol of Zeus' power from which all other lightning bolts are patterned. It is a two-foot-long cylinder of high-grade celestial bronze capped on both ends with god-level explosives. When it is activated, the cylinder emits a more classical-looking lightning bolt. The master bolt is the first and most powerful weapon that the cyclops made for a god. The purpose of it was to become Zeus's main weapon and to help battle the Titans during the First Olympian War. It has enough power to make hydrogen bombs look like firecrackers. The Master bolt sheared the top off of Mount Etna and hurled Kronos from his throne.