Redrock M2 72-55 Step Down Ring - Hoya 55mm UV Filter

Restock M2 72-55 Step Down Ring - Hoya 55mm Skylight Filter (UV Filter) - Rubber Hood. This was from a Restock M2 adapter kit. It was used to connect the body of the device to the lens of the camera. It looks to be essentially two parts: Hoya 55mm Skylight Filter Threaded 55mm lens hood. I guess they could be used on any lens 55mm lens that requires a Skylight (UV filter- I read online that the Hoya Skylight is a UV filter) or a lens hood or both. The filter is clean and clear, see the pictures. If you have any questions please let me know. Thanks