Amazon.com : K&F Concept 49mm Variable ND Filter ND2-ND32 Camera Lens Filter (1-5 Stops) No X Cross HD Neutral Density Filter with 28 Multi-Layer Coatings Waterproof (Nano-X Series) : Electronics
Amazon.com : JJC 49mm Variable Neutral Density Filter ND2 to ND400, Slim Fader ND Filter for Canon EOS M6, M6 Mark II, M5, M50, M50 Mark II, M200 with Canon EF-M 15-45mm
Amazon.com : ProMaster 49mm Variable ND, Neutral Density Filter - HGX Prime (1.3 - 8 stops), (Model 5645) : Electronics