Thank you for viewing. This is a mount adapter for Nikon Z mount. By attaching this adapter to Sony E-mount lenses, you can use them with Nikon Z mount cameras. I was able to use not only Sony's genuine lenses but also third-party lenses without any problems, including autofocus. Please check the photos for the condition of the product. - Model Name: ETZ21 Pro - Type: Mount Adapter - Color: Silver - Compatibility: For camera lenses - Connection Method: With electronic contacts - Features: Durable metal construction - Size: Standard size Please consider it.