1. It is made of metal material, durable and sturdy 2. It is easy to install, remove and use 3. The adapter step up ring has impact resistance 4. It is durable and reliable for long-term use 5. A useful thing to achieve optimal shooting effect 6. Material: Copper/aluminum alloy 7. Applicable models: Suitable for Canon all FD lenses and Nikon all F-mount digital SLR cameras 8. Function: full manual control, manual focus, manual exposure, aperture priority, infinity out of focus
