Model Number: TS-ND-3 Brand Name: Evertop Key Specifications/Special Features: TS-ND-A adjustable fader neutral density filter ND2-400, variable fader ND filter for photographyDescription:1.ND filter (neutral density) reduces the amount of light reaching the film without affecting the color.2.Can be used to enable slower shutter speeds.3.Also can be used to better separate subjects from the background by allowing wider apertures, effectively decreasing depth of field. Product nameVariable Fader Neutral Density ND Filter MaterialAluminium Aluminium ring and Optical Glass Size 37,43,46,49,52,55,58,62,67,72,77,82mm Step Adjut from ND2 to ND 400 freely Packing Plastic Box