Thank you for your interest in the product! This is the "8Sinn PL > RF Mount Adapter." This is an extremely high-quality PL mount adapter from 8Sinn, made in Poland, which allows you to use PL mount lenses on RF mount bodies. I purchased it new and used it for six months. * Stainless steel PL mount flange. * Precision 0.005mm. * Infinite focus. * Aluminum alloy and stainless steel. * Black/Silver anodized I used it with a Red Komodo 6K, but I no longer need it because I changed my camera system. There is some wear and tear, but I think it's relatively clean. Please judge the details by looking at the images. The contents are as shown in the photos. ・RF to PL mount adapter body ・PL side front cap ・RF side rear cap ※ The Red Komodo 6K in image 2 is an example of the mount adapter attached. The Red Komodo 6K is not included. #red digital cinema