Product review (1 stars): Annoying
These things eventually get lost or damaged or they just wear out.  It's a good idea to have a spare on hand (if you can remember where you put it).  This particular one is made of material that is too thick or just too rigid.  The opening is not flexible enough for the waste to go down into the disposer without being pushed.  I am going to try to file or sand it down so see if I can weaken it enough to make it work; if not, I'll just have to contact Waste King to get a replacement.  Very annoying..