The CPL Filter Nano X PRO with a copper frame in 72 mm thread size is a circular polarizing filter designed for photographic applications. This filter effectively reduces reflections from non-metallic surfaces such as water and glass, while enhancing color saturation and contrast in outdoor scenes. The copper frame construction provides durability and precise thread compatibility with various lenses. Its slim profile design minimizes vignetting even with wide-angle lenses. The multi-layer nano-coating technology offers excellent water and oil resistance while maintaining optical clarity. This filter is compatible with standard 72 mm lens threads and features a rotatable front element for precise polarization adjustment. The K&F Concept filter construction ensures reliable performance under various lighting conditions while protecting lens surfaces from dust and scratches. The circular polarizing design preserves accurate autofocus and exposure metering functions in modern camera systems. This professional filter is suitable for landscape, architecture, and general photography applications where reflection control and color enhancement are required. The 72 mm size fits a wide range of standard and professional lenses from various camera brands and systems.