The 77mm reverse ring is extremely effective for macro photography.

Features:
It is extremely effective for macro photography.
This reverse adapter ring allows you to mount a 77mm filter thread lens in reverse on for Canon EOS camera.
Completely manual control， manual focus and manual exposure.
There is no ROM connection on the ring so diaphragm control of the lens is set manually.
Metal design with smooth surface.
Equipped with a stop pin.
Made of high quality material， strong and durable for long time use.

Specifications:
Main Material: Metal
Color: Black
Compatible Camera: for Canon EOS cameras with 77mm filter thread lens
Item Weight: Approx. 29g / 1.0oz

Package List:
1 * 77mm Reverse Ring