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Sensei PRO 67-72mm Brass Step-Up Ring Drivers pressure or force) applied toUse 72mm Filters on 67mm Lens Brass Ring Prevents Binding and Jamming Knurled Sides for Firmer Grip Matte Black Finish Minimizes Reflections The Sensei PRO 67 72mm Brass Step Up Ring permits the use of 72mm threaded filters on lenses with 67mm filter threads. It features brass construction and is coated with a matte black finish to minimize reflections. Brass offers enhanced durability and resistance to warping over conventional aluminum rings, and is