This PolarPro Brass Step-Up Ring allows you to use 67mm threaded filters on lenses with 49mm filter threads. It has knurled sides to provide a more textured grip when mounting or removing it from a lens. This step-up ring features brass construction to prevent binding and jamming, and a matte black finish to minimize reflections.
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Solid brass, buttery smooth threads, does what it's supposed to. Same quality as the PolarPro VND. Minimal packaging.
I ordered this for our PhD research student. So far they seem to be satisfied with the product. This Step-up ring is sold by other sites for less money, but we purchased it through B&H for their history of quality products, fast turn around and excellent support.