Kase Armour magnetic filter frame for square filters 100x100mm, 2mm thick.
You use the magnetic filter frame to use your square filters of 100x100mm on the Kase 100 Armour magnetic system. You simply place the filter in the magnetic frame and then attach it to the holder. The edges of the frame are finished in such a way that no light from the side and back enters the image. This prevents annoying reflections.