Package List: 55/64 inch Female aerator brass shell*4; 0.7 inch Aerator*4; Rubber gasket for female aerator brass shell*4; Please check the size information to see if it can fit your faucet before placing the order. All Metal Solid Brass Made Faucet Aerator Shell: This kitchen sink faucet aerator consists of aerator brass shell and built in aerator. The aerator cover is made of leading solid brass material with chrome finish, ensuring quality and longevity, resist scratches. It is corrosion proof, no deformation. Perfect match with most bathroom or kitchen faucet style. High Quality ABS Material with Rubber gasket: The bathroomfaucetaeratorparts is made of high quality ABS material and high performance rubber gasket that is included for connection, which is long-lasting, good performance in sealing to create a continuous water flow. Prevent water leakage, eliminate costly water waste. Water and air fully mixed to achieve a better cleaning effect. Water Saving: This faucet aerator is designed from the concept of environmental protection perspective, it mixes the water and air well to create lots of bubbles and restrict the flow of water from taps without reducing water pressure. It can adjustthewaterflow,controlthewatervolume,andmakethefaucetflowsmoother, thereby, effectively savingwater,generatingenoughbubblestopreventwatersplashing. Easy to Install: No tools are required for installation, simply screw it to the faucet then the installation is done. You can easily done it within 1 min!