I bought this dual clamp to clamp equipment both parallel and perpendicular to the node rail. I was a bit worried if the double clamp would be strong enough as there wasn't much information on the interface connection. When I received the product I was very pleasantly surprised that not only is the shutter mechanism very solid (even for heavy lenses), but the interface includes a very handy mechanism for aligning the two halves in one of the 90 degree positions. Because of the thickness, this dual clamp also provides enough height to remove the camera from the node rail.
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