The Sandwich Touch & Go by Sachtler allows you to adapt the Touch & Go quick release system on tripods, monopods, and dovetail mount bases. One of the advantages of the Touch & Go quick release system is the lock which prevents accidental disengagement of the camera from the adapter plate. The lock is visible in our images above, simply press the lock and move the lever to the "OFF" position to release your camera attached to the Touh & Go plate enabling you to quickly and securely move your camera from one Touch & Go mount to another. There are three 3/8" threaded tie down locations on the bottom of the adapter. The included Touch & Go Plate 16 comes with 3/8" & 1/4" screws, this plate is standard for the DV 12, Video 15, Video 18/20, Video 25 Plus EFP (#2500P) and Video 18 dutch.