Product review (4 stars): Works on a 555 SS
Bought this to replace the original baffle on an InSinkErator 555-SS.  Used a utility knife to cut away the old baffle, and then just popped this one in.  Simple and painless.  I am deducting one star just because the design of this baffle slows the water drainage a little too much in my opinion.  My wife really likes the fact she can pull this one out to give it a good cleaning, something the old integral baffle made impossible.