This thing works great! It pumps 10 gallons per minute and operates like a champ. Putting it together was pretty straight forward. I didn't see the in/out markings and originally hooked it up backwards, but it was easy to figure out the problem. Pros: love the pump speed and portability. Cons: The cord to reach the battery was really short. I ended up splicing in an inexpensive set of jumper cables to make them longer. Also, like many people mention, the pump hose is a soft material and it will twist and cinch up pretty easily. You have to pay close attention to it. After my first use, it twisted loose and ended up leaking fuel everywhere. Another con; the hoses come out each side of the pump. This makes it a pain to store when not in use. It's not very convenient at all. The lift hose will always have fuel still in it and will drip. Coiling the hoses is awkward due to their coming out each side of the pump. Combine that with the coiling of power cord and it can be a jumble when trying to store away. Overall, I gave it four stars because it works just like it promised and the price point was very budget friendly. Make it easier to store and it would be a definite five stars. All of that aside, I'd still highly recommend it, and do, to anyone that needs to transfer fuel.