Chauvet DJ CLP-15 Half Coupler

CLP-15 is a half coupler rather than a C-clamp, and the difference matters: it closes completely around 2 inch (50 mm) tube instead of gripping it from one side. That is what takes the rated load to 660 lb (295 kg) and what makes it the right choice where a fixture must not be able to rotate or slip.

An M12 threaded bolt carries the fixture yoke. The heavy-duty material and full wrap are the reason this sits above the C-clamps in both price and capability, and it is the clamp to reach for on moving heads and heavier bars.