We were very impressed with these half coupler clamps. Although they are small, they are very strong and easy to work with. The wing nut is also very strong and the supplied washers ensure that you don't over tighten. We have decided to keep the clamp fitted to our fixtures in our carry bags during transportation because they don't take up any room and they also do not damage the lid of our bags. This makes setting up and taking down much faster at a venue or gig.