Installation Tool: The package includes four disassembly wrench tools of different sizes, allowing you to disassemble or install the faucet water-saving device in minutes. No other tools are needed, making it very convenient. Great Effect: Each swivel extension faucet aerator features a fine mesh that cushions the water's impact and saves water by mixing air, creating a fine, non-splashing stream. Materials: The sink faucet aerator is made of durable, easy-to-install plastic. The fine filter screen provides excellent filtration, maintaining a stable and consistent water flow without splashing. Wide Application: This water tap filter aerator is suitable for installing and replacing tap accessories in homes, hotels, and public spaces. It can be fitted to kitchen sink faucets, bathroom taps, and lavatory faucet spout heads. Package Contents: 16 x bubblers, 4 x spanners. Note: Light reflection and different displays may cause the item's color in the picture to differ slightly from the real thing. The measurement error allowed is +/- 1-3 cm.