Product review (1 stars): You don't need this if you are replacing an old garbage disposal
The one star here is not because this is a bad product; rather, like other reviewers have said, you don't need this at all if you are purchasing a new Wasteking 8000 or the like and replacing an insink-erator or other brand.  I love the new Wasteking versus my old ISE Badger!  But it came with everything you need, this is really only useful I suppose if you want to use some of your old parts (splash guard etc) from your old disposal.  Which doesn't quite make sense why you'd want to, but that's the only need for this part.