K&F Concept Nano-X Series Magnetic Lens Filter Step-Up Adapter (67 to 77mm) Screws onto 67mm Lens Threads, Accepts 77mm Magnetic Filters, Supports All K&F Magnetic Series Filters, Black Anodized Aviation-Grade Aluminum FILTERS-Filter Holder Adapter Rings
K&F Concept Nano-X Series Magnetic Lens Filter Step-Up Adapter (67 to 77mm) Screws onto 67mm Lens Threads, Accepts 77mm Magnetic Filters, Supports All K&F Magnetic Series Filters, Black Anodized Aviation-Grade Aluminum FILTERS-Filter Holder Adapter Rings