Not only we struggled with installation and plastic fittings under the sink ( especially dishwasher hook up), the product itself doesn’t hold my expectations. I washed a pot in the sink after cooking potatoes. So, not a lot of dirt to wash off. The sink was scratched at the bottom. After one wash of a pot?! 
The glass washing piece is simply ridiculous- you don’t want to be washing your glasses only inside. I took it out completely. The knob that turns the water on and off is flimsy as hell, I wonder how long it’ll hold up. It is beyond annoying to turn on the water, as the switch controls both, the faucet and the vertical stream. Stuff inside the sink fits poorly, the top slider on the sink has no purpose or someone measured while designing this thing was either high, making a mistake, or just did t care enough to check before making.