Product review (1 stars): You just don't need this item
I installed a Waste King 8000 and swapped out my existing Insinkerator Badger. There really isn't a need for this adapter. Changing out the connector collar was the least difficult thing I had to face in completing the installation. It wasn't the Waste King unit that was the problem. It was cutting my existing pipes to fit the larger Waste King 8000. All in all, it was a challenging install but, I'm very happy with my new disposal!

Save you money you just don't save any time or effort by using this thing.

BTW, this is the first time I've returned anything to Amazon. Wow was that EASY....nice job Amazon!!!