Product review (4 stars): They are ok
Don't quite fit, they fall out.  As long as I don't lift the stove grates when cleaning, they serve their purpose.  They do stand up to the heat.  I have to remember when I move them to go back and pick up the bumpers that have fallen out.  Lost a couple in the dishwasher so I definitely have to be reminded.  The remaining originals, they don't just fall out as they fit snugly.  Had to replace some because some of the originals flattened out, making grate u level.  At the end, they work.