Optical glass with high definition image quality, effectively isolate water droplets and water vapor.Aluminum alloy frame is more practical, aluminum alloy frame is reliable and firm.Wear-resistant and scratch-resistant, sturdy and moreND Scaler.ND scrim can reduce the amount of incoming light, lower the shutter speed, prevent overexposure, also can resist scattered light, improve the color saturation of the picture, you can clouds, silky flowing water, empty streets. Commonly used in street scenes/natural scenery/tourist attractions/ special effectsCPL Polarizing.CPL polarizer can eliminate harmful reflections, improve the clarity of the image, increase the contrast of light, color saturation, such as , white clouds, etc., so that the color is more vivid.Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use.Color:Dark GrayMaterial:Light Aluminum Frame With Optical GlassPackage Contents:3x Lens FilterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.