Product review (2 stars): Didn't Fit, even with (5) adapters.  No setting #'s on the knobs.
They do have a cheaper looking finish than the original Frigidaire knobs.  But what do you expect for the price.  BUT IF they fit - I would have kept them and rated them better.  The biggest problem was that even with five adapter inserts, they only went up to an inside diameter of 0.259" (Red).  But the brass post coming out of my range is 0.34" in dia, with the bottom portion cut off to keep the knob from spinning on it.  Between the smallest (yellow) at 0.242" and the blue and green being in between the yellow and red, it seems these sizes are very close and a larger one to accommodate this larger post on the Frigidaire.  Not sure if it's worth the hassle to return them for the modest price, I may get around to it or maybe not.
For reference, my Frigidaire knob is #316204915 in black#90, it's printed right behind the know on the front of the stove.  Now, if I could only find this know without paying the rediculous prices that Frigidaire is asking.
BTW, the reason I need new knobs is because one broke and the others have most of the painted on numbers rubbed off due to use.