A Step-Up Ring expands the compatibility range for your filters to fit smaller diameter camera lenses. For example, our 67mm-77mm Step-Up Ring would allow your 77mm filter to fit your favorite 67mm lens. Featuring a deep knurled, CNC machined brass frame for easy mounting and durability, plus an electroplated matte black finish to block unwanted reflections, our Step-Up Ring is designed for production-grade use, out in the elements or in the studio.     FEATURES CNC machined brass frame. Matte-black electroplated surface helps eliminate reflections. Aggressively knurled edges provide plenty of grip. Note, the 95mm x 1 x 95mm is designed for lenses with coarse threads, allowing for use of our filters on lenses such as the Canon RF 28-70mm f/2 L USM, Sony FE 200-600mm f/5.6-6.3 G OSS, and other coarse-thread lenses. Adventure Assurance™ - Be satisfied with your PolarPro gear throughout your adventures or your money back.