The Kase 72mm Wolverine Magnetic Stack Cap Set consists of top and bottom magnetic steel caps for nonthreaded Kase Wolverine magnetic filters designed to be used on a lens with 72mm front filter threads. These caps can protect compatible filters from dust, scratches, and fingerprints while removed from a lens. Additionally, these caps can enable a more streamlined system for storing and carrying your filters by allowing multiple magnetic filters to be stacked on each other, with the caps at the top and bottom of the stack.