This NiSi Step-Up Ring allows the adapter ring included with an S5 150mm Filter Holder Kit for a Nikon AF-S NIKKOR 14-24mm f/2.8G ED lens, as well the adapter ring included with an S5 150mm Filter Holder Kit for a Tamron SP 15-30mm f/2.8 Di (VC or non-VC) USD lens or Tamron SP 15-30mm f/2.8 Di VC USD G2 lens, to be used on a lens with 82mm front filter threads. It features an aluminum alloy construction for durability while remaining lightweight.