High flow rate hand siphon pump: With durable L2m D21mm, lengthen and thicken transparent PVC pipe, oil, high temperature and corrosion resistance make this transmission faster, pumps 10L/Min Easy to use: built-in inlet and outlet valve to prevent backflow, direct extraction and liquid outflow in 5 seconds. The arrow indicates the direction of the flow. Multi-function: lightweight and portable hand transfer pump, ideal for vehicles without anti-theft filter net, such as lawn mower, brush cutter, hedge trimmer, etc. Wide Usage: This manual water pump is for gasoline, gasoline, diesel fuel, water and other common liquids. It can also change the water in your home aquarium. Note: The fluid you are trying to extract must be HIGHER than the influent bucket. The end of the fitting must remain inside the fluid and not just on the surface.