The Genustech GEN-X-SAQRP Arca Swiss Sliding Quick Release Plate interfaces with an optional Genustech Gen-X-Plate or other optional Arca Swiss compatible clamps. It comes with both a 1/4"-20 and a 3/8"-16 threaded camera tie-down screw. The screws are the captive type screws that rid in a channel that runs along the center of the plate. A removable locating pin is included for helping to prevent optional cameras that are compatible with the locating pin from twisting on the plate.