The Hitech 165mm Lucroit Wide-Angle 2-Slot Filter Holder and Adapter Ring for Canon EF 14mm f/2.8L II Lens Kit
contains the Lucroit filter holder along with an adapter ring for attaching the holder to the Canon EF 14mm f/2.8L II lens. This combination allows you to utilize up to two 165mm-wide filters on the filter thread-less wide-angle lens.
The filter holder is compatible with all 6.5" / 165mm-wide rectangular filters and is capable of rotating a full 360° to better suit the use of graduated neutral density filters and other filter types that are enhanced by varying positioning. The filter holder adapter ring attaches the filter holder to the lens using a rubber retaining ring to bayonet mount system for a precise and secure connection.