The Kirk QRC-1 Quick Release Clamp is a 1" long clamp that is compatible with all Arca Swiss-type plates and mounts. The clamp is made of lightweight aluminum and stainless steel construction, to provide long-lasting dependability. No internal mechanisms are exposed, and this clamp engineered with safety stop relief grooves that provide improved versatility when mated with Kirk camera plates. Kirk plates are designed so that they will slide halfway across the clamp before stopping, giving you greater control without sacrificing flexibility.
Just one quarter turn of the locking knob allows the camera mounted to the plate to be easily adjusted along its path or, if the safety stops are not used, to be removed entirely from the side. A full turn allows the camera to be removed from the top.