Gadgetron Containers were heavy duty vaults built by Gadgetron. They required six keys to be opened.
One such Gadgetron Container had been installed into the Nebulox Seven Prison Ship, where it held some bolts and gold. The Plumber had locked himself inside of the vault when the Nebulox Seven was blown up by Vendra Prog and Neftin Prog, allowing him to survive as blew through the Cerullean Sector and into the Zarkov Sector, where it crash landed in the Hagrow Swampland of planet Thram. However, The Plumber was unable to escape, and Ratchet and Clank had to obtain all six keys to unlock the vault.