INSTALLATION TOOL - The package includes 4 disassembly wrench tools of different sizes. You can use them to disassemble or install the faucet water-saving device in a few minutes without needing additional tools, making it very convenient. GREAT EFFECT - Each swivel extension faucet aerator has a fine mesh that cushions the impact of water and saves water by mixing air into the flow, creating fine air bubbles that help prevent splashing. S - The sink faucet aerator is made of plastic, which is durable and easy to install. The fine filter screen provides effective filtration and helps maintain a stable, consistent water flow without splashing. WIDE APPLICATION - This water tap filter aerator is suitable for installation and replacement on taps in homes, hotels, public places, kitchen sinks, bathrooms, and lavatories. Material: Plastic Color: Blue + Black Package Contents: 16 x bubbler 4 x spanner Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause slight variations in the color shown. Measurement error allowance is +/- 1-3 cm.