The description says "Focus Ring Adapter," but I'm not sure if that's the correct name as I don't know its purpose. There is no significant damage to the exterior. When the lever is rotated, the inner ring moves. It will be sent via Nekopos or Yu-Packet (shipping costs covered by the seller). ※Note: My products are only listed on Mercari and Yahoo Auctions. If they are listed on other sites, someone is posting the product information without my permission, and I have no relationship with those sites.