D-ring screw--suitable for the camera and lens with 3/8 inch screw hole,Tripod Screw Slotted screw--can be used with tripods, monopods, telescopes, ball heads, lens collars, lens plates, etc,Camera Accessories Monopod screw--using suspension ring, for hanging the camera strap or backpack, easy to carry,Mounting Screw Fixing screw--this camera d-ring screw uses standard 3/8-inch threads, with a flat- screwdriver slot and a hinged "d" ring, allowing you to simply screw it into the quick release plate without any tools,Hinged Screw Camera fixing screw--the design is simple, easy to install and unload, and easy to use,Camera Parts