Colour:Set 8 Quantity:1 batteries required:No Batteries Included:No Item Weight:120 g Specification: Condition: 100% Brand New Item Type: Aquarium Air Pump Accessories Material: Plastic Color: As the Picture Shown Function: Adjust the air volume of the air pump. Application: Approx. 4mm/0.16in Air Pipe Instructions: Connect the regulating valve in the middle of the air pipe, and adjust the amount of gas by turning the blue valve Package List: 2 x Water Pipe 2 x Regulating Valve 6 x Suction Cup 2 x Air Stone 2 x Check Valve 4 x Accessories About this item Easy InstallationOur oxygen check valve is small in size, light in weight and easy to install. It can be installed without other complicated steps and can be reused, thus bringing you more convenience. High QualityThe air pipe is made of high quality plastic, which is not easy to corrode, is durable and has a long service life. With Suction CupThe suction cup can fix the oxygen tube on the wall of the fish tank, neat and beautiful, not easy to float. Two Way ValveThe two way reversing valve divides the pipeline into two parts, and the two ends are reconnected with an air regulating valve, which can control the rotary plug and adjust the air flow. 100% GuaranteedIf you have any questions while shopping, please contact us and we will solve it for you as soon as possible. See more product details Easy InstallationOur oxygen check valve is small in size, light in weight and easy to install. It can be installed without other complicated steps and can be reused, thus bringing you more convenience. High QualityThe air pipe is made of high quality plastic, which is not easy to corrode, is durable and has a long service life. With Suction CupThe suction cup can fix the oxygen tube on the wall of the fish tank, neat and beautiful, not easy to float. Two Way ValveThe two way reversing valve divides the pipeline into two parts, and the two ends are reconnected with an air regulating valve, which can control the rotary plug and adjust the air flow. 100% GuaranteedIf you have any questions while shopping, please contact us and we will solve it for you as soon as possible.