These Teflon discs do what they should. I haven't had them long, so I don't know how they will hold
up long-term; but they work. The reason I gave four stars instead of five is because of how they
are cut. They are not perfect discs. They look like they were cut - poorly - by hand. In this day
and age, when you can purchase a dollar-sized hole punch at any craft store, there should be no
excuse for having odd-cut "discs". There wasn't a "disc" in the bunch. They were oval-ish in shape
and no two were the same size or shape, so there isn't any consistency of how they look, (which
isn't that important since no spectator will ever see them), or how much of the shell interior they
cover. I even had to trim a couple up myself.
So, the product does what it should; bit they are
poorly and inconsistently cut from disc to disc.