1/4" Screw D-Ring For Camera Tripod Monopod Quick Release Plate Baseplate Rig QR 1/4" metal male thread with flat head screwdriver slot and hinged "D" Ring This captive screw allows the fitment of different styles of plates to fit directly into the base of your camera equipment via the 1/4" screw Can be used with tripods, monopods, telescopes, ball heads, lens collars, lens plates etc Material: Stainless Steel Color: Sliver