Let me start by saying this pump kit is a decent liquid transfer tool, but falls short as a dedicated RV winterizing solution. The red plastic pump feels sturdy in hand, and the included PVC hoses have a nice flexibility that makes positioning easier during use.

The biggest issue? Those supposedly secure connections. Like other reviewers mentioned, the rigid plastic fittings simply don't compress enough for the clamps to work properly. I had antifreeze spraying everywhere during my first attempt - not exactly the 'leak-proof' experience promised. Pro tip: keep towels handy and consider adding your own rubber gaskets.

About those brass fittings - major letdown. They look like standard garden hose threads but aren't. Had to make an extra trip to Home Depot for adapters, which added unexpected cost and frustration to what should be a simple process.

When it does work (with modifications), the pumping action is smooth. I've successfully used it to transfer gasoline between containers with no leaks - just don't rely on it for pressurized systems. The hoses cut cleanly if you need to shorten them.

Final verdict? It's an okay manual pump for basic liquid transfers at this price point, but look elsewhere if you need a true RV winterizing solution. With some DIY fixes it can work, but shouldn't require that much tinkering out of the box.