I agree with Goomer, bogs down and stalls out easy with anything bigger than a 1 1/2" wire wheel. For it being rated at 4cfm@90psi it seems to suck a lot more air than it says, even my big 60 gallon compressor with 12cfm@90psi barely keeps up with this air hog. For $10 it does work but even harbor freight has better models.

Not much power, bogs down and stalls out easily. I run cut off disks in it and it will do the job, but much more slowly than an electric. Sucks a lot of air for the work it puts out. What do you expect for ten bucks? Worth the $10, but not much more.