Manual siphon pump: What you received is a 2 meter thick PVC hose with 2 hose clamps. For the size of the hose diameter, please refer to Figure 2 on our homepage. The thicker hose flows faster. Wide range of applications: used as a perfect safe transportation for fuel, petroleum, gasoline, diesel, water or non-corrosive liquids, and can also be used as a household fish tank water changer. Easy to use: The fuel pump has a built-in inlet and outlet valve in the siphon pipe to prevent backflow. It can be pumped directly and the liquid will flow out within 5 seconds. High-quality material: oil-resistant rubber sphere, stronger water absorption, grained hand pump can be anti-skid, can easily enter the container, oil-resistant, and avoid corrosion. Safety note: The liquid you want to pump must be higher than the feed barrel; it is not suitable for salt water or corrosive liquids; it is only suitable for vehicles without a gasoline protection net. Delivery Quantity: 1 Piece