This Kase 77mm Magnetic Lens Adapter Ring allows a Kase K8 100mm Filter Holder to be used on a lens with 77mm front filter threads.
Along with a compatible filter holder, this lens adapter ring can accommodate a Kase 86mm magnetic filter. Its steel construction allows for convenient installation or removal of those filters. When combined with the filter holder and the lens adapter ring, a Kase 86mm Magnetic Circular Polarizer filter can be rotated to adjust its effect. In such instances, an external dial on the filter holder allows for the independent rotation of the circular polarizer.