Product review (5 stars): Used on my Frigidaire Gas Cooktop
The clip inside the knob of my Frigidaire gas cook top is missing.  I cannot find a replacement clip, or just a matching knob. Frigidaire just doesn't seem to offer this for my model.  I decided to try this and to my delight it worked.  I had to sand the inside down a bit to get it to slip over the stem and it's a tight fit, but it did the job and I'm happy not to have to purchase a complete set of matching knobs, since I have been unable to find a single knob for my stove.