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KitDive 67mm Red Filter for underwater photography (Wet) – seafrogs
UURIG R-67 67mm Rapid Filter System Camera Lens Filter Metal Adapter O8E6 749029760075 | eBay
Amazon.com : 67MM Ultimaxx Professional Four Piece HD Macro Close-up Filter Kit (1, 2, 4, 10 Diopter Filters) for Camera Lens with 67MM Filter Thread and Protective Filter Pouch : Electronics