The Kase Armour System incorporates round 95mm magnetic filters that fit into the round opening of the filter holder. The round magnetic filters can be rotated with a cog wheel on the filter holder, allowing you to use the magnetic filters independently of the 100mm filters.
The kit also includes a 100mm Magnetic Soft Grad ND 0.9 filter that attaches to the holder with the included 100x150mm magnetic filter frame, as well as two step up adapter rings (67-82mm and 72-82mm) as well as a 77mm and 82mm adapter ring, allowing you to use the Armour filter kit on a wide variety of lenses.
Please Note: Armour is not Compatible with Kase K9, Wolverine or Skyeye Magnetic Filters.