Aquarium Air Pump Accessory Kit Pump tube+oxygenation stone+check valve
(Airline， Air Stone and Check Non Return Valve)

Features
-To prevent water backflow into pump
-Fit for fresh water and sea water
-For extending the service life of air motor
-To reduce the noise and save electricity
-Make air bubbles equably
-No stoppage，
-Non-corroding，
-Able to cleanout

Specifications
Material:mineral+rubber
Color:green， red， yellow， black
Size:of valve：12/14mm*46mm
Size of oxygenation stone：15mm*25mm
Tube Length：2M/3M (for your options)

Package included
2x Valve
2x oxygenation stone
1xPump tu