Package Contents: You will receive 10 pieces of M18.5 faucet aerators and 2 pieces of aerator wrenches, sufficient for regular use. Due to varying water quality, it is recommended to replace the aerator every 3 to 6 months to maintain water hygiene and safety. Premium Material: Our aerator nozzles are made of high-quality plastic, offering durability, fine craftsmanship, and resistance to corrosion. They do not clog, rust, or produce unpleasant odors. These faucet aerators are compatible with most M18.5 faucets. Water Saving: This faucet aerator operates quietly and helps conserve water. It thoroughly mixes water with air to create a non-splashing, smooth, and steady stream with a foaming effect. Simple Installation: These kitchen faucet aerators are easy to install and remove without the need for additional tools. Use the included wrench to securely attach the aerator to the faucet. The filter head can be easily detached for cleaning whenever necessary. Wide Application: Suitable for use in homes, hotels, and public facilities, these aerators enhance kitchen sink faucets and basins by improving water flow and filtration. Ideal for restoring low-flow faucets or replacing damaged aerators without changing the entire faucet.