★ Easy installation:

Insert the air control valve directly into hose, you can use these 2 way air line regulator connectors to connect 2 pieces of 4 mm air tubes. Please screw

★ Wide applications:

Great to be used for regulating the oxygen volume either increase or slow the airflow down into air stone, or controlling water flow for plants drip irrigation system.
Helps deliver oxygen, keeps the air fresh, and creates a comfortable aquarium environment

★ Durable to use:

Made of quality plastic, the fish tank air pump aquaculture is durable, non-toxic, doing no harm to your fish tank and your aquarium pets, can be applied for a long time.

★ Adjustable air tube connector:

With the rubber ring inside, you can adjust the air flow easily from closed to wide open by simple twist of the knob.

★ Widely suitable:

Work well on standard-sized 3/16" ID airline tubing. T shape overall size: 1.45" x 0.94" x 0.35".