INSTALLATION TOOL - The package includes 4 disassembly wrench tools of different sizes, which can be used to disassemble or install the faucet water-saving device in a few minutes without needing additional tools, offering convenient operation. GREAT EFFECT - Each swivel extension faucet aerator features a fine mesh that reduces water impact and saves water by mixing air into the flow, creating fine air bubbles to prevent splashing. S - The sink faucet aerator is made of plastic, designed for durability and easy installation. The fine filter screen provides effective filtration, maintaining a steady and consistent water flow without splashing. WIDE APPLICATION - This water tap filter aerator is suitable for installation or 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 items are not part of this product. 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.