This siphon hose pump is a simple, power-free solution for transferring gas, diesel, oil, water, and other non-corrosive liquids. The upgraded 15 mm hose provides faster flow than standard siphon pumps, while the built-in one-way valve helps start siphoning quickly with just a few squeezes. Once the source container is placed higher than the receiving container, liquid flows automatically by gravity without continuous pumping. Made with durable PVC hoses, weighted brass fitting, and secure hose clips for stable, controlled transfer. Ideal for emergency refueling, lawn mowers, generators, boats, fish tanks, garages, and everyday fluid transfer tasks.