The Haida M7 Circular Polarizer filter is a dedicated drop-in filter for the Haida M7 75mm Filter Holder. The M7 Circular Polarizer filter helps remove reflections and glare from non-metallic surfaces, such as water and glass. The Nano-multicoated CPL filter features anti-reflection and anti-color cast properties and conveniently fits in the dedicated drop-in slot of the M10 filter holder with an independent rotation wheel that allows you to adjust the polarization of the filter.