5x Aquarium Check Valves Non-Return Air Line Tubing
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Fits standard aquarium air line tubing. View our above picture for easy assemble.
USPS First Class Package
Additional Product Information5x Aquarium Check Valves Non-Return Air Line Tubing .
Comes in either black or red coloring.
Non-Return check valves prevent water from backing up into your air pump from power outages or air pump failure.
View our above picture for easy assemble.
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