Product review (2 stars): REPLACEMENTS AS GOOD AS THE ORIGINALS BUT THAT IS NOT SAYING MUCH
These are fine and last as long as the originals.
The problem is in the original design where the plastic is not reinforced. There is a thin metal insert inside the plastic prong. But the plastic prong connection eventually stresses from, may I point out, using it for it's intended purpose, and the knob is unusable.
Also the markings come off with any type of cleanser - dish soap, windex - anything. So not a problem is you don't clean your stove?
Not good but the only thing that fits what I will point out is not a cheap range.
So until the manufacturer can solve the problems will need to continue replacing the knobs. I plan to look into the stainless knobs for the same model b/c this is getting expensive.