Product review (5 stars): perfect!
When we moved into our house, the disposal baffle was all torn up, and we lived with it that way for many months, holding a plate over the drain when I ran the disposal.  When I started looking at new baffles, I thought I'd have to drop the disposal and unhook the drain, but when I saw this I thought I could give it a shot.  It's better than I imagined, just like it was built in!  The little rim at the bottom fits perfectly into that indentation just above the baffle, and the ring around it sits tightly against the drain.  AND, I can take it out and clean it!  If I had known there was such a great product, I would have ordered it months ago!!  It also cut down on the sound tremendously.