Includes adapter to fit most kitchen and bath faucets - female 55/64-Inch threaded nut - black plastic adapter: 55/64-Inch to 15/16-inch 27 threads * LED Aerator indicates water temperature; lights red color if above 35°C/95°F, lights blue color if below 35°C/95°F * Runs entirely on the water stream pressure from your faucet - no batteries required * This meets AB1953 code as a lead-free aerator - safe for drinking water * Solid brass swivel ball and arm