Fotga 72mm Slim Fader ND Lens Adjustable Variable Neutral Density ND2 to ND400 for Canon /Nikon 18-200 Canon 18-85
Features:
This FOTGA Fader ND Filter is adjustable from ND2, ND4, ND8 to ND400 Infinitely, satisfied different shooting conditions.
Neutral Density (ND) filters can reduce the intensity of light without appreciably changing its color.
Apply slow shutter speed under strong sunlight exposure, large aperture is available to create depth of field easily.
Mark scale and "Min" (the lightest), "Max" (darkest) tags on the outer ring to help users accurately resets to a certain density.
With 72mm male thread/77mm female thread can be mounted to 72mm lens or attached to 77mm additional filter. 
Suitable for dynamic screen, waterfalls, streams, waves, etc.
Specifications:
Material: Optical Glass
Neutral density grade: 2-400
Back thread diameter (attach to lens, male thread): 72mm
Front thread diameter (attach additional filter, female thread): 77mm
Item weight: 37g / 1.31oz
Package size: 9.2 * 11 * 1.5cm / 3.6 * 4.3 * 0.6in
Package weight: 77g / 2.716oz
Package List:
1 * ND Filter