I bought a fairly inexpensive auto level laser for a basement finishing project. I thought the bracket that came with it would fit. I was wrong, it was terrible. So I decided to upgrade instead and spent another 150.00 on a higher quality laser to try this. I've been very impressed, I've used it on Ibeams, steel posts and even a few screw mounts. The best thing about it is its versatility, it can move back and forth, in and out, up and down, oh and the twist grip rotation is awesome.