This is an extender that attaches between an "RF mount" camera body and an "RF lens" to extend the lens's focal length. It can double the focal length of the attached lens. - Model Name: Extender RF 2× - Brand: Canon - Included items: Front cap, rear cap, pouch case Thank you for viewing. It has been used a few times. I believe there are no noticeable scratches, dust, or debris, but please consider that this is a used item stored at home.