• Macro coupler, also known as reverse ring. 
  • There are male threads on both sides.
  • It is to be connect a lens reversely to another lens on their filter threads.
  • In general, when a lens is reversely mounted, magnification is surprisingly increased.
  • Focusing distance can be as close as 3cm or closer.  Using a tripod is recommended.
  • Made of aluminum with excellent anodized finishing.
  • Camera and lens showing in photos are not included.