Like others reviewing this item, the spout on our dispenser broke at the joint just after a year.  This was the first time that I became aware of the cheap plastic construction.  I decided not to order a replacement part as I can foresee a continuous 
cycle of broken parts and replacements for as long 
as we have the fixture.  It’s really too bad, as we’re quite happy with the rest of the fixture.  It’s hard to believe that Kohler would include such a poorly designed part with an otherwise great kitchen faucet - makes me wonder about their other products...