Description: Material: Crafted from PVC materials, this aquarium water outlet fan nozzle ensures reliable performance even in the humid environment of an aquarium Product Size: With a diameter of 45mm, this aquarium water outlet fan adapter is designed to fit seamlessly into various aquarium configurations Removable Design: Designed for convenience, the detachable feature allows for thorough cleaning without dismantling your aquarium equipment, simplifying maintenance tasks Automatic Rotation: This aquarium outlet accessory features an innovative design that allows the water outlet to automatically rotate, driven by the water pump's power, without the need for electricity. This ensures efficient water circulation in your fish tank Easy Installation: The package includes an adapter, making it easy to install and fits for most standard aquarium setups Specification: Material: PVC Size Chart: Diameter: 4.5cm/1.77inch Package Includes: Option: Type A: 1 Piece Aquarium Water Outlet Fan(Adaptable Inner Diameter 2cm) Type B: 1 Piece Aquarium Water Outlet Fan(Adaptable Inner Diameter 2.5cm), 1 Piece Connector Type C: 1 Piece Aquarium Water Outlet Fan(Adaptable Inner Diameter 2cm) Type D: 1 Piece Aquarium Water Outlet Fan(Adaptable Inner Diameter 2.5cm), 1 Piece Connector Note: Please allow slightly errors due to manual measurement and different monitors.