Overall I would say it was a good 8 buck investment. I touched up some bolts with it. At 4 inches it sprayed about a dime size pattern that was tight with little overspray (30 psi). I did find that I needed to thin down more than I do for my HVLP because of some slight spitting. I had a battery box that needed painting so I tried that to see how it did on larger surfaces. I could get about a quarter size at 6 inches and 45 psi. That was about as good as it got. and at that point and pressure it was hard to control overspray while overlapping.

As far as bolts, nuts, and knobs go, it does great and gives a good finish. I would recommend it for that.