I've had 3 other Kohler kitchen faucets that served us well. Not this one. It isn't a problem just with this faucet, but with the whole package.
Problem 1: Installation. The cold and hot water lines are SHORT. Seriously - they wouldn't reach the cold and hot water valves that were directly under the sink in an 8 year old home - standard setup, nothing odd with our configuration.
Problem 2: Salt in the wound from #1, the installation showed extension tubing to go to the cold and hot water lines, but no extension lines were in the kit. First, if they knew an extension was necessary why didn't they just simply make the flex tubing 10" longer! Second, why would you show that in the picture but not reference it in the instructions or include it in the kit. Terrible. I had to make 2 trips to the hardware store to get parts that fit our connections and the faucet connector.
Problem 3: The sprayer is terrible. The hose is shorter than our other Kohlers and the spray is weak.
Problem 4: Milling debris IN the faucet. Within an hour of turning the faucet on it started spraying from the aerator. When I removed it I found metal and plastic debris clogging the aerator. After removing that and reinstalling, it was better, but still not good. There are 4 different components to this aerator. I had to separate them all and use a toothpick to dig through them and then reassemble.
Problem 5: After installation we noticed that the metal around the lever is all pitted. I didn't examine the finish that closely before installing -- thought it was a given with Kohler that they wouldn't turn something like that out.
I seriously can't believe Kohler puts this on the market. I could pay $20 at Lowes and get a better faucet. If this is where their quality is going, unfortunately, count me out on future purchases from this company.