Feature(may vary by option.)

●3/16"(4mm) Inner Diameter of Airline tube can use for most of Air Pumps. No toxic, clear and flexible.
●Air stones can be easy driven by Air pumps. Red clear valve can prevent water from back siphoning.
●Adjusting valve can change the oxygen output into the suitable way for fish tank.
●All In One Package - No Worry about Mismatching,
●Accessories Includes: 4 x Return Valve,4 x Control Valve,4 x Air Stone,25 ft Airline Tubing,12 x Connector and 12 x Suction Cup.

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Description

Accessories Includes: 4 x Return Valve,4 x Control Valve,4 x Air Stone,25 ft Airline Tubing,12 x Connector and 12 x Suction Cup.