BQLZR Internal Thread Kitchen Water Saving Aerator M22 360&iexcl;&atilde; Swivel Faucet Tap Diffuser Adjustable Nozzle Filter Adapter Silver and Black Product Name:Nozzle Filter Adapter Save energy.Water saving 30%~70% (compared with standard bubbler) Fits all standard taps with M22 external thread and internal thread M22 - gasket included