K&F Concept 55mm Variable ND Lens Filters Kit 1-5 Stops & 5-9 Stops (2 Pack) Adjustable Neutral Density Lens Filters Set for Camera Lens

From the brand

【Light Reduction Function】The ND filter’s main function is to via rotating the stops, control the entry of light without affecting the overall color balance, for long exposure, and motion blur techniques in changing light.
【No “X” Cross】K&F Concept utilizes cutting-edge technology with a self-lock filter frame while the filter rotating to the Mini(ND32) or the Max (ND512) will hard stop, the filter support no vignetting on wide-angle and telephoto lens ( no more than 16mm).
【28 Multi-Layer Coatings】Both sides of the glass with nanometer coatings, are waterproof and scratch resistant, effectively reduced the reflectivity and glaring, with no color cast of the image.
【Imported AGC Glass】Made by import Japanese AGC optical glass, CNC-non slips 7.6mm lightweight aviation aluminum frame design preventing wide angle vignetting.
【NOTE】This Filter is compatible with all 55mm lenses. Please verify your camera’s lens thread size before ordering. The number is always beside the “ø” (diameter) symbol.