The holder is machined from a solid block of aluminum and features a matte black surface finish to effectively prevent reflections. With the included NC-CPL filter in this kit, you will achieve even greater color saturation. A patented design allows you to rotate the CPL in the main adapter without having to remove the other filters. Thanks to an innovative side clamping mechanism, the rectangular filters slide smoothly into the holder while being securely held in place. Suitable for lens diameters of 52 mm, 55 mm, 58 mm, 62 mm, 67 mm, 72 mm, 77 mm, and 82 mm, compatible with Lee, Cokin, Hitech, and Singh-Ray. The kit includes 1x landscape NC-CPL filter, 3x adapter rings, and 1x elegant leather case.