[Widely Used] Suitable for all aquariums, such as fish tanks, heavy-duty professional water pumps, commercial air, etc. [Easy to Use] The air distributor is connected to the pump tube air to manually control the flow of large air valves or turn the air pump on or off. air. Suitable for a pump air outlet or 4mm air tube. This aquarium air flow distributor is made of high-quality stainless steel, smooth, sturdy and has a long service life. [Gas Diversion] Oxygen aeration pump accessories can be used to divert gas. It can convert the air flow from 8mm to 4mm.