Works Great! Did just what I wanted.
I've been looking for something like this for years to spray the insides of unibody rocker panels. 3M has a system, but I've not tried it because I wanted to spray regular paint and it is set up for proprietary stuff that stays sticky. I didn't want sticky and this let me spray thinned Rustoleum inside rocker panels, fender areas and door cavities I can't reach with a brush. I don't doubt the rust preventative stuff they sell here would be better, but Rustoeum is less expensive and good enough for what I needed. Only down sides are it is a bit of a bother to clean (but not sure how it could be easier when you have that 3 foot probe). Also the probe is made of plastic hose that can be pinched/bent which will sometimes damage it. I found it best to tape a coat hanger to the probe to stiffen it so I could reach in better and not bend it. Replacement probes are available and I ended up needing one. That said, great tool and I did the hidden area of both of my '60s GM cars and will probably help a friend to his. Recommended if you need to do this sort of rust proofing.
Reviewed by: daveS from Philadelphia, PA on 10/28/2010