55mm(Male) to 72mm(Male) Macro Reverse Ring Adapter Introduction This reversing ring allows you to mount a 55mm or 72mm(Female) front threaded lens in reverse on a lens mount camera. Reversing the lens greatly increases the macro reproduction capabilities. Brand new, never used Made of metal color : black Package Included: Macro Reverse Ring Adapter x1 Suitable For 55mm(Female) front threaded lens ( CAMERA 55mm to Lens 72mm) 72mm(Female) front threaded lens ( CAMERA 72mm to Lens 55mm)