1Versatile Use: This bilge pump can be used for yachts, boats, and fishing boats, providing comprehensive pumping for bilge drainage, sewage disposal, oil extraction, and more. 2Durable Materials: The manual pump is made of metal and plastic materials, ensuring excellent durability and corrosion resistance, can withstand harsh marine environments. 3Outlet Diameter: The manual pump has a 32mm outlet diameter, allowing for quick discharge of water pollutants and improving drainage efficiency. 4Flexible and Portable Design: Operated by hand pressure, this manual pump doesn't require any power source, making it flexible and portable. 5Dependable Performance: This manual bilge hand diaphragm pump could effectively removes water, waste, and oil from various water vehicles, ensuring a clean and safe environment on board.