Product review (1 stars): Poor quality, did not fit.
This item didn't fit my Frigidaire gas range.  As a matter of fact the black inserts didn't fit inside the knobs, so that made no sense.  I returned them and got the manufacturers knobs instead.  I found them at Sears Parts Direct for waaaay less than the $11 per knob I found elsewhere.  $28 for all four.