Threaded bolt holes are sloppy. The V-groove in the clamp cannot be used for mounting on a round tube, as the tie bolt is drilled off-centre into the lower V-groove and screwed in. When you tighten the clip, it moves sideways because the metal shank is not tight. I don't mind paying good money for good products that will do the job right, but this round pipe clamp is a flop. I had to prepay for return shipping to get my money back. Not satisfied with this either. Looks like a good clamp but not within tolerances.