A gripping tool. I use it to hold a wire fence upright housing my pets. I estmate the clips can hold a 10 0r 15 pound pull. I'm a 78 yr old guy with pets. They are indoor pets. I raise the 16 ft. garage door 3 feet. Spread an 8 section folding gate across the opened door. Attaching the ends to the garage door runners with a clip on each side. Thus the pets have the run of the full garage and get the fresh air of the outdoors.
I once set up a test station where I had to test the performance of microwave waveguide filters and I despaired about all the screwdriver work that would be involved (this was in the pre-electric screwdriver days). The waveguide was WR-90 (X-band) but the technique is general. I just fished around in my desk until I got several of these heavy-duty paperclips. The clips just clamp on each side of the waveguide flange and they hold remarkably well. Oh you should drop in two machine bolts from one side (nuts not needed) to maintain the WG alignment. With this arrangement you can swap a waveguide joint in just a few seconds. You can't get any cheaper and it works quite well.