Product review (5 stars): Restored Mom's stove!
It's genuinely crazy that this integrated stove top from the early 80s works great. We have a selection of cartridges that still work!  All we needed was a set of these knobs to refurbish the unit and now everything works again.  I can't reasonably expect these knobs to last 20 years or so like the old ones (until they do, of course), but they work perfectly and look OEM.

Very small price to pay for a fully functional stove again.