Kenko Filter Accessory INSTANT ACTION Conversion Ring for 72mm Converts Filters to Black (Kenko) [Imported Model] PRO1D+ Lenses, Screw-in Magnetic,

This is a conversion ring for the "PRO1D+ INSTANT ACTION" series that converts screw-type filters into magnetic types. You can convert your existing filters into filters compatible with the "PRO1D+ INSTANT ACTION" series. The magnetic detachable design makes filter work faster and more convenient. *This product cannot be attached to a lens by itself. A separate "PRO1D+ INSTANT ACTION Adapter Ring" must be attached to the lens. Filter diameter: 72mm