INSTALLATION TOOL - The package includes 4 disassembly wrench tools of different sizes, which can be used to install or remove the faucet aerator quickly and easily, without the need for additional tools. GREAT EFFECT - Each faucet aerator features a fine mesh screen that mixes air into the water stream, reducing splashing and helping conserve water while maintaining a steady flow. HIGH QUALITY MATERIALS - The sink faucet aerator is made of durable plastic and is easy to install. The built-in fine filter screen provides effective filtration and ensures consistent water flow. WIDE APPLICATION - Suitable for use in homes, hotels, and public restrooms. Can be installed on kitchen sink faucets, bathroom taps, and lavatory faucet spouts. Material: Plastic Color: Blue + Black Package Contents: 16 x aerator, 4 x wrench Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.