K&F CONCEPT 43mm Magnetic Adapter Ring + GND8 + ND8 + ND64 + ND1000 5-piece Set I am selling this because I opened it but didn't use it. (The camera's exposure function was better than I expected, so I didn't need the ND filters.) By attaching the ring in the fifth photo (the one with the hollow center) to your camera, the other four ND filters will magnetically attach with a single touch (no need to screw them on). ND Filter, Half ND Filter, Magnetic Attachment, Easy to Install, Includes Filter Case, Double-Sided 28-Layer Nano Coating, No Color Cast, Water-Repellent, Anti-Smudge, Scratch-Resistant (NANO-X Series) [Directly from the Manufacturer]