Very high quality tools. Designed and built for professional use.
They are one of the few manufacturers who design their power tools towards the metalworking industry, rather than woodworking / building.
I can't vouch for all of their tools (not sure about cordless drills) but the majority of their tools are German made, and superbly so. I'm told that spares / repair are not problems, but as none of my Fein tools have ever given problems, I have yet to confirm that!
Pricing is surprisingly reasonable considering the quality, though I suspect it's a lot better in he U.K. or Europe than the U.S. (Always the way when things have to get shipped a long distance).
I have a Multimaster (superb tool, use it a lot, no issues), a big 16mm drill (use it only occasionally, but when I do I use it all day) and an angle grinder (best I've owned)! Love 'em all and would have no hesitation about buying more.