Features: Stainless steel spinning axis, suitable for both fresh water and salt water. Made of high-quality plastic material, sturdy and durable. Built-in special slot to protect the motor. 360-degree rotatable flow for higher water circulation and lower energy consumption. Ideal wave maker for providing consistent water movement in aquariums or fish tanks. Specifications: Material: Plastic Color: Gray Optional types: Single Head with Suction Cup 8W / Single Head with Suction Cup 12W / Dual Head 12W / Dual Head 24W Plug: Chinese plug, 220-240V Dimensions: Single Head with Suction Cup 8W: 12cm / 4.72 inch (Approx.) Single Head with Suction Cup 12W: 14cm / 5.51 inch (Approx.) Dual Head 12W: 9cm / 3.54 inch (Approx.) Dual Head 24W: 15.5cm / 6.10 inch (Approx.) Package List: 1 x Aquarium wave maker Notes: Please note that an adapter may be required depending on your region. Allow 1-3cm variation due to manual measurement. Colors may vary slightly due to lighting and monitor settings. New and old versions of this product may be shipped randomly.