【Package Contents】: This set includes 9 faucet aerators in sizes M16.5, M18.5, and M21.5, along with 3 wrenches for easy installation. It is recommended to replace the aerators every 3 to 6 months to maintain optimal water quality and safety. 【Water Saving】: The faucet aerator features a honeycomb outlet that mixes air into the water stream. This creates a smoother and gentler flow of water, prevents splashing, and allows for water savings of approximately 30%-40%. 【Premium Material】: Made from high-quality ABS plastic, this faucet aerator is durable, corrosion-resistant, rustproof, clog-free, odorless, and built to last, ensuring long-term performance. 【Easy Installation】: The installation process is quick and easy. Using the included wrench, you can replace the faucet filter in just a few minutes. Simply attach the aerator to the wrench, insert it into the faucet, and turn clockwise to secure it in place. 【Wide Application】: The M18 aerators are versatile and can be installed in faucets found in kitchens, bathrooms, and toilets. They are perfect for fixing faucets with low water pressure or faulty aerators, helping you avoid the cost of replacing the entire faucet., Manufacturer: UZSUZZ