Feature:1. The threeway diverter valve can combine 2 air outlets into one channel, and can also divide 1 air outlet into two channels.2. The twoway diverter valve divides the pipe into two, and the two ends are reconnected with an air regulating valve, which can control the rotary plug and adjust the size of the air flow.3. The air pipe is made of highquality plastic, which is not easy to corrode, and is durable, has a long service life.4. The suction cup can fix the oxygen tube on the fish tank wall, which is neat and beautiful, and the pipe is not easy to float.5. Small, light and easy to install, it can be installed without other complicated steps, and can be reused, bringing you more convenience.Specification:Condition: 100% Brand New.Item Type: Aquarium Air Pump AccessoriesMaterial: PlasticColor: As the Picture ShownFunction: Adjust the air volume of the air pump.Application: Approx. 4mm/0.16in Air PipeInstructions: Connect the regulating valve in the middle of the air pipe, and adjust the amount of gas by turning the blue valvePackage List:2 x Water Pipe2 x Regulating Valve6 x Suction Cup2 x Air Stone2 x Check Valve4 x Accessories