"This item is useless, it does not do what it is supposed to do as the pump is nowhere near strong enough to create any kind of vacum from one container to another. After two hours I had managed about 0.5 litre to be transferrred and evetually gave up. Very frustrating to see the fuel come into sight then dissapear back down the tube again due to the ineffectiveness of the syphon pump. I even tried it on a bucket of water so I could see what was going on and this failed to work either. Comes with no instructions at all for use. Eventually I wrapped it on a bag and threw it in the bin."