Premium Quality: With 2 flexible & sturdy PVC hoses, upgraded 15mm diameter nozzle. 4 pcs of metal clips fix two hoses tightly, prevent from slippage & leakage. Include one hose clip to secure the hose standing into the holder without any spilling of liquid. Easy To Use: Built-in outlet and inlet valve to prevent backflow, extraction directly, liquid outflow in 5 seconds. The arrow indicates flow direction. Newest High Flow Siphon Hand Pump Portable Manual Car Fuel Transfer Pump for Gas Gasoline Petrol Diesel Oil Liquid Water Fish Tank with Syphon Hose Wide Usage: This manual water pump is for fuel petrol diesel gasoline oil water and other common liquids, also can be a water changer for fish tank at you home. Note: The fluid you are trying to extract has to be HIGHER than the influent bucket. The fitting end must kept inside of the fluid not just on the surface.You never have to start the siphoning process with your mouth again, it's extremely dangerous and grossly inefficient. Not suitable for drink water, salt water and any chemical liquids 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.