INSTALLATION TOOL - The package includes 4 disassembly wrench tools in different sizes, allowing you to easily disassemble or install the faucet water-saving device in minutes without needing additional tools. 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 soft air bubbles to prevent splashing. S - The sink faucet aerator is made of durable plastic and is easy to install. The fine filter screen provides effective filtration, maintaining a steady and consistent water flow without splashing. WIDE APPLICATION - This tap filter aerator is suitable for use in homes, hotels, and public places. It can be fitted to kitchen sink faucets, bathroom taps, and lavatory faucet spouts. Material: Plastic Color: Blue + Black Package Contents: 16 x bubbler, 4 x spanner Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement error is +/- 1-3 cm.