Control Air FlowThe air flow control lever valve aquarium air pump accessories could control the flow of O2/CO2 manually by switch the lever to control the air pump. These aquarium air flow control valve aquarium air pump accessories are made of quality stainless steel material, high strength, fine polished surface, sturdy and durable, never let air leak out. Easy to UseThis single head air valve aquarium air pump accessories used for distribution of airflow such as air pump. Adjusting the air flow of the air pump, easy to operate. Suitable for fish tank, aquarium. Perfect Aquarium AccessoriesAir lever valve aquarium air pump accessories can be connected to aquarium tubing, great assistant for your fish tank and aquariums. It's an good replacement for the worn out or broken one. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.