Product review (4 stars): Not perfect, but good enough.
These knobs were a good match for my stove/oven combo.  I needed a knob for the oven that just said "Off" "Bake" and "Broil," and this kit included that.  It also included a couple of other options that I didn't need.  I ended up replacing all 6 knobs on my stove, because these all-plastic knobs didn't match the originals in terms of design.  The original knobs were made of a metal ring, with a plastic turn piece (I don't know the right terminology!), so they look better when I replace them all.

The issue I had was that the one I really needed doesn't want to fit all the way on.  It's the right shape opening on the back of the knob, but there must be an obstruction about half-way down, keeping it up off the backsplash.  It looks a little bit silly, but at least we have use of our oven again.  The second oven knob also has a small splash of white paint on it, so it's not perfect, either.  I haven't reached out to the manufacturer.  Overall, I'm pretty satisfied with this purchase.