The 3.9 inches (100 mm) wide holder is suitable for lens apertures, 3.2 inches (82 mm), and 2.8 inches (77 mm), 2.8 inches (72 mm), 2.6 inches (67 mm).Also available in lens aperture sizes smaller than 2.4 inches (62 mm) sold separately. Dual Purpose Filter: By reversing the mounting direction, you can create two different effects such as SOFT gradation effect, a wide Reverse gradation effect and a wide reverse gradation effect. ND1000: The ND effect is the thickest and most enjoyable filter set for expressions and the most enjoyable filter. (CPL) This is a CPL dedicated to the holder.The filter you need to reduce water reflections and increase contrast when shooting scenery.