This is a 2x teleconverter for Nikon Z mount. It doubles the focal length of compatible lenses (the f-number becomes two stops darker). It's a convenient item that allows you to extend your telephoto range with less gear. I'm selling it because I don't use super-telephoto lenses often. There may be some scratches and scuffs on the exterior, as well as dust inside the lens, but I believe there are no issues that affect the image quality, such as mold or clouding (please forgive any oversight as I am not a professional). Operation has been confirmed, and the image quality is clear. The included accessories are as shown in the photos: the original front and rear caps and the original box. I am also listing this on other sites, so I may remove the listing suddenly. *** 【High-Magnification Extension】 The Nikon TC-2.0x is a teleconverter that extends the focal length of your lens by a factor of two. This allows you to capture distant subjects in greater detail, making it ideal for wildlife and sports photography. 【Compatibility】 It is compatible with the Z mount and can be used with Nikon's Z series cameras to expand your shooting range. It is compatible with specific Nikkor lenses, increasing your freedom in photography. 【Compact Design】 The lightweight and compact design makes it easy to carry and reduces the burden during shooting. It is also suitable for travel and outdoor photography. - Brand: Nikon - Model: TC-2.0x - Type: Teleconverter - Mount Type: Z Mount Thank you for viewing.