K&F Concept CPL Slim Polarizing Circular Polarizer Lens Filter Nano-X 37-127mm

SIZE:37/40.5/43/46/49/52/55/58/62/67/72/77/82/86/95/105/112/127mm. This effect is often used to increase the contrast and saturation in blue skies and white clouds. Isn’t that magical?. All you have to do is simply rotate the filter to the required angle.

eBay