Product review (4 stars): Waste King Sink stopper
I thought I was buying the connecting piece that mated the sink to the garbage disposal.  I was wrong, however, this is a nice little insert that fit into that connecting piece and achieved the same goal of putting a new splash guard in place.  The disposal is about 50% or more quieter than before and nothing flies out of the sink anymore while using the disposal unit.

Beats buying a new disposal hands down considering "quiet" models run upwards of $300.  This is definitely worth the $10 try before pulling the trigger on a new disposal unit if you're looking to quiet things down and keep debris headed down the drain.