Product review (4 stars): Does what it's supposed to do.
We're pleased with this little device, which we used to replace the originally installed (and by now incurably grungy) rubber drain thingy that came with our in-sink garbage disposal unit. While I didn't know the model number of our disposal, I was pretty sure it was made by Insinkerator and took the chance that it would fit. It did. We're happy knowing that its way-beyond-cleanable, grungy, disgusting predecessor has been retired to a landfill somewhere.