Well known make. Nicely made and finished. Very easy to fit - although it came complete with all the plumbing type parts, I simply needed to install the top plastic adjuster part as everything else was identical to that already fitted and in good condition on my radiator. This made the job really simple, only took a couple of minutes, and works perfectly. Only slight criticism is that the product itself is a little on the large side so bear this in mind if it's going to be in a very exposed location.