Made of high quality plastic, eco-friendly, strong and durable. The air manifold is used to distribute the air flow in the aquarium air pump. Helps increase oxygen and keep the air fresh, creating a healthy environment for your fish. The air volume of each adjustment switch can be independently controlled. Suitable for aquaculture, hotel seafood room, aquatic product transportation, fish tank, oil pipe, etc. Simple and practical, air distributors are the best choice for aquariums. Package includes: 1 x oxygen pump air flow distributor (3 way).