Complete kitchen tasks with more ease and efficiency. This KOHLER Purist semi-professional kitchen sink faucet combines a strong architectural form with features adapted from the busiest professional kitchens. The three-function deck-mount kitchen faucet sprayhead lets you cycle through a range of tasks at the touch of a button: an aerated stream for rinsing, Sweep spray for cleaning, and Boost function for fast filling of pots and pitchers.