Neewer 37mm Clip-on Nd 2-400 Cellphone Camera Lens Filter Kit: Adjustable Neutral Density Filter With Phone Clip For Smartphone - Camera Filters - AliExpress
Neewer 37mm Clip-on ND 2-400 Cellphone Camera Lens Filter Kit: Adjustable Neutral Density Filter with Phone Clip for iPhone 7 Plus 7 6 6S 6 Plus 6S Plus Samsung HTC Motorola iPad
Amazon.com : Neewer® 72MM Complete Lens Filter Accessory Kit for Lenses with 72MM Filter Size: UV CPL FLD Filter Set + Macro Close Up Set (+1 +2 +4 +10) + ND Filter