Oh, well, You use this one to group up a bunch of files together, as a regular KSP mod usually requires more than a single file, then you can easily access it and delete it, modify it, and so on, without having to mess around with the individual files. So if I have the vanguard grouped, and I want to delete all of it, or I have another pack of mods grouped, and I don\'t want them anymore, I can delete them off the computer at one go, or modify all of them at one go.