I bought this sink because it had all the extras for installation.  Most turned out to be plastic fittings and my plumber wouldn't use them, so I had to pay extra for metal fittings.  He said the plastic ones would crack when things were tightened down.  So...don't buy this sink because of the extra fittings as I did.  Otherwise, it's a beautiful sink and I'm pleased with how it looks.  The bowls seem deeper than my old sink so I'm still getting used to that.