Product review (4 stars): Great way to clean up the appearance of an old ...
These fit perfectly on a 1989 vintage Jenn Air cooktop with the "figure eight" stems.  One important note is that the new knobs do not exactly match the original knobs with respect to aesthetic design.  However the knobs work perfectly from the perspective of matching the gradations on the original knobs.  Great way to clean up the appearance of an old cooktop.