I did indeed search but came up with mainly comments about the stainless steel hanger. Anyway, my experience has been that the clamps are impossible to get on the traditional Aries steel pipe and slide up the curve without first prying open the clamp. It is hard for me to believe that originally, one had to spread the clamp before using it.
Of more importance, I could not fasten mine properly per the instructions that came with the clamp, the holes did not line up well. I reversed the clamp and found out it fastened easily. Go figure.