Description: 1/4"" metal male thread with Hex Socket & hinged ""D"" Ring. D-ring with flat head screwdriver slot , can drive it by coin. This quality robust captive screw allows the fitment of different styles of plates to fit directl. Can be used with tripods, monopods, telescopes, ball heads, lens collars, lens plates etc. Specification: Material:Stainless Steel Size:16x16x21mm/0.63x0.63x0.83inch Tail maximum diameter: 16mm/0.63inch Tail thickness: 4mm/0.16inch Screw: 17mm (with thread: 11.5mm) Package Includes: 1 PiecexD-Ring Screw
