Features: 1.Strong Suction: The manual diaphragm bilge pump is made of high toughness plastic, making it lightweight yet extremely sturdy. It provides powerful suction for efficient pumping. 2.Wide Application: This handle pump is a must have on boats. It serves as a reliable backup in case of electric pump failure, ensuring continuous water drainage. 3.Durable and Reliable: The marine manual diaphragm bilge pump is built with a robust and durable structure specifically designed for maritime use. 4.Easy to Use: This manual pump features a user friendly handle design, making it easy and comfortable to operate. It requires no external power source. 5.Compact and Portable: The manual diaphragm bilge pump is compact and lightweight, allowing for convenient storage and easy transportation. Specification: Item Type: Diaphragm Hand Pump Material: Plastic + Metal Working Mode: Self Priming Hose Diameter: Inlet And Outlet Outer Diameter 1-1/2in (25mm) Capacity: 720 GPH (2725 LPH) Maximum Discharge Head: Approx. 4m (13ft) Maximum Suction Range: Approx. 3 meters (10ft) Applicable: For ships, yachts, kayaks, speedboats, canoes, etc.