Product review (5 stars): After I removed it I am so glad I did
Pefect to replace the built-in hand guard in my Insinkerator disposer. I measured the top of the opening as 3-1/4 inches and this item is 3-1/8, but it fit perfectly. I had to take a small sharp knife and cut out the old rubber guard first. After I removed it I am so glad I did. The bottom was icky with grime and bacteria.  I had no way of knowing it was that dirty underneath. Now I can remove this new one and clean it occasionally. Glad I bought it.