Underworld 3 (Source)
From SWGANH Wiki
It allows you to sell faction to a recruiter of the opposite faction.
you lose 25 faction and gain about 250 credits each time you use it.
If you want to switch factions, you can resign from covert/overt, go to a recruiter of the opposite faction and sell until you are at or below 200. Once you are at that point you can then buy faction from the recruiter by making donations until you are over 200 and declare for the faction.
