Product review (4 stars): Smells like a tire, but stops water
It does it's job stopping the water as needed.  It is a very thin metal and the rubber smells like a tire.  Do not expect one thats looks or feels sturdy like one you purchase at a store because this seems like it was rigged putting pieces together.  The rubber is thin and like i said smells like a tire or gas.  It does stop the water from draining, but for how long I don't know.