Amazon.com : Haida 77mm NanoPro Variable Neutral Density 1.2 to 2.7 Filter (4 to 9-Stop) : Electronics
Amazon.com : JJC 82mm Variable Neutral Density Filter ND2 to ND400, Slim Fader ND Filter for Canon EF 24-70mm f/2.8, EF 16-35mm f/2.8, Sony FE 16-35mm f/2.8, Nikon 24-70mm f/2.8 & More
OKKO Pro Variable Neutral Density Filter NDV - Langly Co
PolarPro Variable Neutral Density Filter Review
Circular Linear Variable Metallic Neutral Density Filters
Ultimaxx 55mm ND2 to ND400 Slim Fader Variable Adjustable ND Neutral Density Filter for All DSLR Camera Lens with Same Filter Thread Size - Walmart.com
Genustech 77mm Variable Neutral Density and Circular G-PND77 B&H
7artisans MC Variable ND Filter 1.5 8 Stops ND2/4/8/16/32/64 Adjustable Neutral Density Filter 58/62/67/77/82mm| | - AliExpress
Amazon.com : 77mm Variable Neutral Density NDX Filter for Sony Alpha DSLR-SLT-A65 : Electronics