CANON Mount Adapter EF-EOS R This is a mount adapter that converts EF mount lenses to RF mount. I used it to attach the EF mount SIGMA lens, which is also listed for sale, to my EOS R7. It works without any problems, and both mounts and the exterior are clean with no dirt or scratches. Included accessories are the outer box and instruction manual. This is a used item, so please refrain from purchasing if you are looking for a new one. I look forward to purchases from those who can cooperate with a smooth transaction.