NiSi 67mm Adapter Ring for Swift System Filters Delkin Memory Black Friday videos and music on its videos and music on its huge 14TB digital library storage capacity with impressive footage transfer speeds of up to 290 MB s with the supplied Thunderbolt 3 cable voice over studios The NiSi Adapter Ring for Swift System Filters is designed to enable you to use a filter designed for the Swift System to be attached directly to the lens without the need for the NiSi True Color 1 5 Stop VND (Variable Neutral Density filter) The filter simply attaches to the adapter by pressing into the NiSi Adapter Ring for Swift System Filters which then screws onto the lens