Product review (4 stars): Its the right knob and does the job.
This product is exactly what we needed for our Jenn-Air cooktop.  Took three tries buying the wrong one before we got
to this one.  The trick is that you have to know which run of the particular model you have.  In our case Jenn-Air or Whirlpool
used three different knobs on three different runs of the same model.  So check your run number, and specify it to the
parts seller.  You can't go by "this knob fits this model" because it might fit the model but not your particular run.  Here's hoping you can benefit from our frustrations.  Anyway, these fit, and work just fine.