I have the quick coupler on a Nodal Ninja 4 in use, which comes as standard with a screw impractical. In its "quick release plate" product fits perfectly (see pictures) and sits firmly without slipping. Unsurprisingly makes the product even with a Nikon D800 a very robust and stable impression and reduce not the subjective stability of the structure. Since I also have a Manfrotto ball head with the same quick release plate in action, I can now easily install and uninstall the panoramic head. The device is, however, correspondingly difficult. Overall, the price is not low, but adequate.
