Made of durable non-toxic hard plastic for long-time use. No harm to your fish.
Quantity: 1 Count. Work well on standard-sized 3/16″ ID airline tubing. T shape.
With the rubber ring inside, you can adjust the air flow easily from closed to wide open by simple twist of the knob.
Easy installation: Insert the air control valve directly into hose. Please screw down tightly to prevent leaking when turning off.
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