I bought this two years ago so some issues I ran into with this may have been addressed in subsequent production runs. First, this is a great concept - design is great for any two or four mic setup, markings are clear, accessories for height offset work well, and the overall design is light but solid.
However, in my case, each central threaded column that the mic clip attaches to was wobbly. Tried to compensate by adding a 5/8 knurled nut, but the threads were not cut entirely down the shaft, making the last tightening turn nearly impossible. Finally, the set screw for the angle adjustment won't quite stay tight, and is made of a lightweight aluminum that feels like it will strip eventually.
For the very reasonable cost, if the threaded shafts had been solid, I really couldn't have complained. As it is, I find myself now wanting the far more expensive bar that may have inspired this one.