If I can install this faucet, anyone can!  Replaced all the angle stops with new quarter-turn and the 3/8" supply lines fit perfectly. Installed 3 in bathroom sinks and one in the laundry tub.  The drain that's included didn't work for the larger hole in the laundry tub, but we love the push-close feature for the sinks.  We won't miss the old style stopper.  The instructions were easy to follow.