Product review (1 stars): Did not last
I bought one of these to replace the original fan knob on my JennAir cooktop. The original knob had lasted about 4 years.
This one lasted less than 4 months with only moderate use.

It looks very nice, maybe if you need to replace your knobs to sell your house this is a good option, otherwise they are junk.
These fail when the plastic collar holding the metal insert crack even with normal use.