This NiSi 67-82mm Step-Up Ring allows the 82mm filter holder adapter ring for a NiSi V5 Alpha 100mm Filter Holder, a NiSi C4 Cinema Filter Holder Kit, as well as a NiSi V5 100mm, V5 Pro 100mm, or V6 Pro 100mm Filter Holder Kit, to be used on a lens with 67mm front filter threads. It features aluminum-alloy construction for durability while remaining lightweight.