Material: High quality chrome plated brass. Available sizes: 16/18/20/22/24mm external thread adapter to 22mm external thread adapter (refer to size description) Add extra capacity of extension faucet adapter to your existing faucet aerator, make your aerator extend to connect. Package includes: 2 threaded adapters and gaskets Comes with a rubber gasket to prevent water leakage. Easy to use. To install, simply unscrew your existing aerator from your faucet, tighten this adapter by hand. Please measure the size as the picture shows and make sure the type that is exactly what you need. Suitable for; most water taps to connect the sink faucet aerator in kitchen, bathroom or garden. Features: -Water saving and energy saving. - The waste of unnecessary water consumption produced, such as washing hands, brushing teeth, shaving, etc. will be avoided. of your faucets. - Suitable for; most water faucets to connect the sink faucet aerator in kitchen, bathroom or garden. - Add extra extension