Using it as pictured it is good - in some situations the joints might not have the flexibility to achieve the desired position - basically, where room is limited on the 'outer' side shown in the picture. The arm and tensioners are otherwise OK but I would limit movement of the base and the arm wherever possible for a long life. The arm itself is metal I think, it's just the joints/screws that aren't as smooth or sturdy as a traditional anglepoise lamp. For the money though, very good. China to UK delivery very fast, less than two weeks I think.