Key Features Adds beneficial oxygen to any aquarium Connects to the Oase OxyMax Air Pump Can be used with 4/6mm Air line Adjustable flow control dial Perfect replacement for any lost or damaged outlets. The Air Outlet can be connected to the Oase Aquarium OxyMax Air Pumps to help add beneficial Oxygen to the water. The outlet can be connected to the OxyMax with any 4/6mm airline. The air outlet can be easily adjusted by way of the front dial to enable a controlled flow of air through the airline and into the water. Provided with the outlet is a strong suction cup that can be securely attached to the base of side of any tank. 5cm Height