【Magnetic 1 Second Swap】This variable ND8-128 ND lens filter with magnetic technology, install the magnetic filter adapter ring on the lens first, then the filter can be adsorbed in 1 second, never miss any wonderful moments. | 【Provides 3-7 Stops Light Reduction】Made by professional import Japanese AGC optical glass, no color cast and showing high definition image. This variable nd filter support 3-7 stops adjustable to control the amount of light entering in the lens with no effects on the color balance. | 【Frame Self-Lock, No "X" Cross】Say goodbye to the dark "X" cross on images, K&F Concept utilizes cutting-edge technology (frame self-lock) to avoid the common "X" cross on a wide-angle and telephoto lens. | 【Waterproof & Scratch Resistant】Both sides of the glass with nanometer coating (a total of 28 layers) are waterproof, scratch-resistant, and anti-glaring, effectively protecting the valued camera lens and presenting high-quality photos. | 【Note】Packge including：1* ND8-ND128 filter + 1* Filter Basic Ring. This filter kit is compatible with all 49mm lenses. Please verified the lens size before ordering. The number is always beside a "ø" (diameter) symbol.