I used this clamp to suspend a microphone from the crossbars of a jeep. Its unique joints allow you to swivel 360 degrees in all three dimensions! What's more, the head of the screw is flat ended, intended for tables, but the curve on the top edge works really nicely for my purposes.

Because the mic stays mounted on a moving (bouncing) vehicle, one of the joints tended to keep getting loose. Not a problem if you're stationary. My previous one mysteriously locked up though - maybe the threads of the screw oxidized. After much searching (I couldn't remember the make or model) I'm thrilled I finally found it again - there's nothing else configured like it. Just remember to clean it once in a while!

I got the Ultraclamp to mount a small digital camcorder on the frame of my motorcycle to shoot some scenic ride videos. (NOT crazy tricks). The clamp is very sturdy and holds quite well to the frame. It has a multitude of mounting configurations and angle adjustments.
Overall I am very happy with it and it is built quite well.

Great for the back packer, you can attach it to a tree branch or fence railing....