A mount adapter that allows you to use Canon lenses on Sony E-mount cameras. I believe it cost over 70,000 yen when I bought it new. No problem even with heavy lenses. I liked the high rigidity, but I am selling it because I am switching completely to Sony. Operation confirmed, stored in a dehumidified storage. - Brand: metabones - Type: Mount Adapter - Condition: Good Comes with a dedicated case.