This is a rectangular lens hood made by OLYMPUS. I don't remember which lens it's for. I measured the diameter and it appears to be 46mm. It's the type that fits over the lens and is tightened with the side screw. Condition: The exterior has no dents or major scratches, but there is some dirt or scuffing on the inside of the hood. Please refer to the photos. The mounting ring shows some scratches.