Multiple specifications: This filter quick switch, with multiple specifications and options, can meet your various needs Aluminum alloy material: This camera lens filter is solid and durable. It is made of aluminum alloy CNC process without deformation Compact structure: No fear of light leakage, the filter support fits closely with the frame to prevent light leakage Compatible: This lens filter is compatible with most lenses, and is compatible with most wide-angle lenses, fixed focus lenses and lenses in the market Supported filter specifications: This ND filter kit supports 49mm, 58mm, 67mm, 72mm, 77mm and 82mm