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 : Electronics
Heliopan 49mm Variable Gray ND Filter - 0.3 to 1.8 (1 to 6 stops) 704990
49mm ND Variable Neutral Density Filter for Leica 50mm f/1.5 Nokton [Black or Silver] Lens - Walmart.com
Amazon.com : K&F Concept 49mm Variable ND Filter ND2-ND400 (1-9 Stops) with Putter HD 28 Multi-Layer Coatings Import AGC Glass Adjustable Neutral Density Filter for Camera Lens : Electronics
Amazon.com : 49MM Variable Neutral Density Slim Filter - ND ND2 to ND400 Filter : Electronics
K&F Concept 49mm Nano X Variable Fader NDX, ND2~32
Breakthrough Photography 49mm X4 Solid Neutral Density 3.0 Filter -10 — Glazer's Camera Inc
49mm No Cross pattern Variable ND filter and Black mist filter 2in1 - GiAi Camera Filter Store