This is a mount adapter from Nikon 1 mount to Canon EF mount. It allows you to attach EF lenses to Nikon 1 mount bodies. I have limited knowledge of cameras and mistakenly purchased this adapter thinking I could attach Nikon 1 mount lenses to a Canon EF mount body. Therefore, I have opened the package but have not used it. Please consider purchasing it. Please note that we cannot accept returns or refunds. We will do our best to ensure a smooth transaction. If you have any questions, please feel free to ask. Thank you. - Type: Lens mount adapter - Compatibility: For camera lenses - Color: Black - Material: Metal Thank you for looking.