Fotga QR Quick Release Clamp Adapter Plate with 1/4" Screw for Tripod Ball Head Arca Benro Compatible Professional Clamp and QR Quick Release Plate Compatible for Monpod Tripod Ball Head Using a base plate that features 3 bubble levels that easily and accurately level your camera in any position, the quick release assembly is a compact quick release system Removable quick-release plate with 1/4" screw for all DSLR camera For easy use with video and many digital cameras, the plate features a centering "video" pin. Double action safety lever releases the camera plate from the base Screw Adapter: 1/4" - 3/8"