The Acratech Quick Release Clamp is a quick release adapter that accepts any of the "Arca" style plates, available from Acratech and from Arca-Swiss, Kirk, Wimberly, Really Right Stuff, Foba, etc. It mounts onto a 3/8" screw and features a "double-speed" rubber quick release knob that opens and closes twice as fast as standard "Arca" style clamps.
This version also features a spring-loaded detent pin that projects into the pockets or windows that are cut into the bottom of most manufactures quick release plates. The detent pin will prevent the plate from accidentally sliding out in the event that the knob is partially loosened.
Note! When using this system quick release plates must be inserted and removed by opening the clamp and inserting or removing the plates from the top.