If you've ever needed to transfer liquids from one container to another, you know what a pain it can be. You have to carefully tilt the full container and hope that the liquid doesn't spill everywhere. And then you have to try to pour it into the other container without making a mess. But what if there was an easier way? With the 3-in-1 transfer pump, there is! This nifty little device can quickly and easily transfer liquids from one container to another. Just dip the air pump into the liquid, insert the outlet tube into the destination container and start pumping. The air pump will create a syphon effect, so the liquid will flow right out of the first container and into the second. In just 5 minutes, you can fill a 20L canister! No more spills, no more mess. The 3-in-1 pump is perfect for draining fuel, oil, water and other liquids. It's also great for deflating inflatable toys, mattresses and pools quickly and safely!