Taking control of your aquarium's air supply is easy with these handy little valves! You get 8 pieces in the pack, so you can set up multiple air lines or have spares. Each valve is made from durable brass with a nickel-plated finish to resist corrosion in the humid aquarium environment. They have a simple lever that lets you manually adjust the airflow from your air pump to each air stone, sponge filter, or other device – you can even shut it off completely. The inlet and outlet diameters are 4mm (about 0.16 inches), which is a standard size for most aquarium airline tubing. This is an essential accessory for any fishkeeper who wants to fine-tune the bubbling in their tank, reduce noise, or turn off certain features during maintenance. A must-have for your aquarium toolkit!
