Product review (3 stars): Cheap fix
I have a Kenmore Pro that goes through stove knobs like crazy.  The factory knobs are plastic and just don't stand up to the heat of the big burners.  A set of five original knobs cost over $250.00.  I did research online and discovered that I'm not the only Kenmore Pro owner with this problem.  I brought these knobs knowing they would be a cheap fix until I can come up with a better plan.  They are way smaller then the original factory knobs , fit loose and you have to pack the inside of the knobs with a little bit of tin foil otherwise they will not push the stove burner stem down far enough to turn.  I can get away with because I am the only person using the stove.  I do not think if you have kids using your stove you would want them.  Gas stoves can be dangerous enough with out having funky knobs to deal with.