The Slik Quick Release Plate 6011 (618-730) is the replacement 1/4 20? thread QR plate for the 505QF, 506QF and 322VF video heads. The all metal plate includes the industry standard 1/4 20? threaded screw for mounting to video and digital cameras. It also includes a registration pin for video cameras when needed that is spring loaded so that it can be pushed down out of the way when it is not needed. The durable cork pad creates a solid slip free connection between the plate and camera to prevent camera drift. The plate also uses a tool free mounting design so you do not need a coin or screwdriver to securely attach the plate to your camera.