Product review (5 stars): Great replacement for Kenmore & Kenmore Elite Disposals.
If you have a Kenmore or Kenmore Elite Garbage Disposal that has a 3" diameter opening --- this is a great replacement.  This unit just snaps into place over the Kenmore ring in the throat of the disposal opening!  Fantastic and easy --- No tools are required!

Getting the old rubber out is more of a challenge, however.  One way is to cut around the perimeter of the old rubber with a utility knife and carefully pull out the cut pieces with pliers.  Or, alternatively, you can just leave the old Kenmore rubber in place and snap this into place over the top.