At the request of repeat customers, we've added an air self-supply function to the MNB nozzle for washing dishes in the kitchen. When opening the faucet, there may be a slight backflow from the air intake. Please open it slowly. The liquid will become quite cloudy with microbubbles, but if you want to increase the ratio of nanobubbles, crush the tip of the aluminum pipe with pliers or use adhesive to reduce the hole diameter. A swivel unit is not included to ensure a smooth flow.