The female thread aerator of 22 mm (FM22) will fit your male threaded valve (the diameter is a real measurement of about 21.5 to 22 mm) universal female froors for Taps Reduction of water consumption 30% -70% High-end materials, completed technology, neat finishes, for quality and longevity guaranteed Easy to put and very convenient to wash the sink It can adjust the size of the water flow. The water from the shower will not let the water gradually infiltrate everywhere. Foam mode Change the game for your sink A simple Mild torsion of the nozzle and the flow changes from the jet (airy) to the shower. You can switch easily between them and the swivel action is really useful when rinsing the dishes, etc. The water of the shower will not leave the water gradually to infiltrate everywhere. All is chrome, a simple and elegant design that works well. A big flow improvement on the existing kitchen valve. Full depth cleaning range of the sink You can direct the flow of water in all directions, this which is ideal for cleaning things. Instructions Clear instructions and an additional adapter, which means that it can be used with male or female screw parts (It does not matter if the screw of your faucet is inside or at outside)