Your review: I built a prototype Plasma mounting yoke using this and several other Kee Klamp components. It served as an excellent 1st attempt. I then migrated to the aluminum version and am still using it.
Pros: Strong - took all stresses very well
Cons: It has a British Pipe thread which is very difficult to get screws for. I re-threaded the tapped holed with a more universal 1/2" tap and was then able to use stainless steel set screws of a lot longer length.