Want to release your camera ? just loose the blue V3 wingnut screw and swirl the Mini QR mounting plate around the rod, and loose the 1/4" screw.
The Mini Mounting Cheese Plate Rod Clamp is with four 1/4" thread mounting holes and a 1/4" screw. Nice design, Glass bead blastng and anodized black.
Its screw knobs updated to V3 rotating thumb knob Lever screw (wingnut screw) .
