As a Toa Metru, Vakama carried a powerful Kanoka disk launcher as his Toa tool. It was a larger, more decorative version of the disk launchers used by Matoran throughout Metru Nui. When the disk launcher was mounted on Vakama's back, it could serve as a rocket pack that allowed him to fly.
Vakama chose a powerful Kanoka disk launcher as his tool. It was a larger version of what he had used in the past to play the sport of kolhii [sic]. The familiarity of it made him feel more comfortable in his new body. Matau poked fun at Vakama for picking something used in Matoran games.
When Vakama wore the disk launcher on his back, it could serve as a kind of jet pack that allowed him to fly. Vakama was able to trigger it with his thoughts.