Product review (2 stars): They fit.
That is about the only good thing I can say about them.  If you do not wash and dry them when done cooking, and G-d forbid they are damp or wet, they will rust in no time flat.  The one on my most often used burner lasted less than 2 months as I didn't expect them to be so poorly made and didn't expect that any type of wetness would ruin them so fast.
Just went to Walmart today to replace the front rusted out drip-pan.  I am hoping this one will last just a wee bit longer.

They do fit GE  and Kenmore stoves.