Neewer Versatile Square Filter Holder System includes: 1 Piece Square Filter Holder + 2 Pieces Metal Adapter Rings(77-86mm,82-86mm) for Cokin Z Series Neewer Versatile Square Filter Holder System includes: 1 Piece Square Filter Holder + 2 Pieces Metal Adapter Rings(77-86mm,82-86mm) for Cokin Z Series