Features: Effective Operations: Simulates natural water motion to eliminate stagnant zones in fish habitats, ensuring proper water movement for warm-water species and marine life health. Durable Construction: Crafted with ABS, resistant to deformation and fading, perfect for prolonged use in setups. Quiet Operations: Engineered to operate with minimal noise, ideal for home or office area, creating a peaceful viewing experience. Adaptability: Suitable for habitats of various measurements, providing improved water motion and oxygen for different environment. For simple cleaning and care, suitable for both new users and those who frequently adjust their habitat accessories. Specifications: Component: ABS Port Size: approx.18mm/0.71inch Quantity: 1pc Package Includes: 1pc 360 Degree Automatic Rotation Duckbill Head note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.