Amazon.com : NiSi 72mm Swift True Color ND-Vario - Variable Neutral Density Filter 1-5 Stops (ND2-ND32) - Rotating Adjustable ND, Compatible with NiSi Swift System Filters - Optical Glass, Waterproof Nano Coating : Electronics
Heliopan 72mm Variable Gray ND Filter 707290 B&H Photo Video
PROMASTER HGX PRIME 72MM VARIABLE NEUTRAL DENSITY LENS FILTER | Rockbrook Camera
NiSi SWIFT 72mm True Color ND-VARIO Pro Nano 1-5stops Variable ND | NiSi Optics USA
SHD ND16 1.2ND - 4 stop 72mm | Benro
dHD Digital Brands ND4 Filter Grey Filter 72mm ND 4 Neutral Density 72 MM | eBay
Neewer 2 in 1 72mm HD Variable ND Filter ND2–ND32 Filter and CPL Filter | eBay
Amazon.com : K&F Concept 72mm Putter Variable ND Filter ND2-ND400 (1-9 Stops) 28 Multi-Layer Coatings Import AGC Glass Adjustable Neutral Density Filter for Camera Lens (Nano-X Series) : Electronics
Bower 72mm Variable Neutral Density Filter FN72 B&H Photo Video
Amazon.com : JJC 72mm ND Filter ND2-2000 VND Variable Neutral Density Fader for Nikon Z 24-70mm f4 S, Sigma 18-35mm f1.8, Sony FE 16-35mm f4, Canon EF 35mm f1.4L II USM Lens