This manual hand-priming pumps have a maximums suction capacity of approximately 10 feet, a capacity of 720GPH, a flows rate of up to 12 gallons per minutes (45 liters per minutes), and a maximums discharge head of 3.5 feet , not need for complex tools, saving time and effort The manual bilge pumps have a fixed handle with a rubber handle, which is nonslip and wear resistant When your electronic oil pumps malfunctions, it can be used as a backup oil pumps This marine water diaphragm hand-priming pumps is mainly crafted from ABS, with a sturdy and wear resistant structure, resistance, and designed specifically for marine applications, Manufacturer: Hsioluted