I spent quite a bit of time researching pumps before gritting my teeth and ordering these. I used it immediately and am very satisfied. It's really well made: great design and great materials. I haven't mentioned in other reviews that the input/output ports are configurable for different orientations, which is nice. It is very heavy, very fast and designed for gasoline, which is not suitable for many pumps. Other reviewers had issues with the impeller freezing when standing up after use, which was remedied by running a quick dose of 2-stroke oil through the impeller after use and before storage. thanks for this advice.