6-piece M21.5 faucet aerator set with replacement filters and installation tools <ul class="a-un0rdered-list a-vertical a-spacing-mini"> <li class="a-spacing-mini"><span class="a-list-item">Package Included: You will receive 6 M21.5 aerator regulators and 2 aerator keys. For the hygiene and safety of your water, it is recommended to replace the aerator directly every 3 to 6 months. </span></li> <li class="a-spacing-mini"><span class="a-list-item">Water Saving: The faucet aerator has a honeycomb water outlet, which is mixed with air through a multi-layer ventilation filter to form bubbles, making the water flow calmer and softer, preventing splashing, and saving about 30% of water </span></li> <li class="a-spacing-mini"><span class="a-list-item">High-quality Material: The M21.5 aerator is made of high-quality sturdy ABS plastic, which is corrosion-resistant, non-clogging, rust-proof, odorless and durable. </span></li> <li class="a-spacing-mini"><span class="a-list-item">Easy to Install: The M21.5 aerator is easy to install. Using the included wrench, you can remove and install it in minutes. Simply combine the flow regulator with the wrench, insert it into the faucet, and turn clockwise. </span></li> <li class="a-spacing-mini"><span class="a-list-item">Wide Application: The M21.5 flow regulator can be installed on the spout heads of kitchen, bathroom, and toilet faucets. It is ideal for repairing faucets with low water flow or damaged aerators, saving you the cost of replacing the faucet. </span></li> </ul>