Feature●3 Stop exposure correction at the top.●Soft border between grad and clear.●rotating front rim to match the horizon●Double threaded metal frame for additional filters or Hood.●Superfine matte black frame.Description Grad ND8 Filter. Front rim rotates to match the horizon. Black-rimmed glass. Superfine matte black frame. Includes front threads for filters or Hood. Optical Glass. Includes Plastic Storage case.