Double Male Coupling 52mm-67mm 52mm To 67mm Macro Reverse Adapter Ring Camera Parts with USB Light and Sport Headband This reversing ring allows you to mount a 52mm or 67mm(Female) front threaded lens in reverse on a lens mount camera. Reversing the lens greatly increases the macro reproduction capabilities. Male thread: 52mm . Male thread: 67mm . Brand new,never used. . Material: Metal (not plastic) . Color: Black . Suitable For: 52mm(Female) front threaded lens ( CAMERA 67mm to Lens 52mm) . 67mm(Female) front threaded lens ( CAMERA 52mm to Lens 67mm) . Pakage included: 1x Macro Reverse Adapter Ring, with 1 piece light blue sport headband, 1 piece adjustable angle flexible black rod USB light