30.5mm 3 Piece Filter Kit. PRO QUALITY FILTER KIT, SUPER HIGH RESOLUTION. This filter kit is of Professional Grade and includes 1- UV filter (ultraviolet) for protection against dust, dirt, scratches, fingerprints and the sun's ultraviolet rays. 1- Polarizer filter (neutral density) to remove the hazy effect that bright sunlight can cause in outdoor shooting situations. 1- FL-D filter (fluorescent) for taking pictures indoors under fluorescent lights. This filter removes the greenish tint given off by fluorescent lighting. 1 compact protective carrying case for transporting and storing your set of filters.These filter are made in japan and caryy a 15 year warranty.