Review on DELTA FAUCET Everest 33-inch Workstation Kitchen Sink in Metallic Black - Undermount Single Bowl with WorkFlow Ledge and Accessories (75B933-33S-BL) by Matthew Goyette

Better than any filter available at your local "hardware store". Installs easily, but its larger size poses a problem for leveling sink drains. Also surprised by the use of plastic instead of metal for the under-sink taper. However, it seems strong enough and does not corrode when wetted with condensate. opened or closed position began to rust. That means it is NOT stainless steel like other parts of the drain, so the electrolytic action will cause the ball to deteriorate. I did not discover this in the short time that Revain has granted a return or replacement. $40 is literally down the drain. It may be worth calling the manufacturer.