Thank you for viewing the details. This is a mount adapter that allows you to use EF mount lenses on EOS R series RF mount cameras. Furthermore, it's a model equipped with a customizable control ring, significantly improving operability for aperture, ISO sensitivity, shutter speed, and more! 【Condition】 ≪Appearance Condition≫ It's a beautiful item with no noticeable scratches or stains ◎ ≪Operation Condition≫ ◇ We have only confirmed the operations described. ≪Included Items≫ ※ Everything shown in the image is included.