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 refer to the images for details. 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