Product review (3 stars): It's okay better bet is swing by a hardware store and pick up a piece of pipe.
Wasn't quite long enough to reach from the InSinkErator to the outflow drain.  Swung by the hardware store to see if they had an extender and ended up walking away with a longer piece of pipe for a cheaper price and on the plus side it was smooth and straight so no build up.  Still was able to use the gaskets so was useful for me.