: Sensei PRO 72-77mm Aluminum Step-Up Ring : Electronics. Use 77mm Filters on 72mm Lens 。 Knurled Sides for Firmer Grip 。 Matte Black Finish Minimizes Reflections 。 Corrosion-Resistant Hard Anodized Finish 。 Includes: Limited Lifetime Warranty, Plastic Case 。 The Sensei PRO 7-77mm Aluminum Step-Up Ring permits the use of 77mm threaded filters on lenses with 7mm filter threads. It has large side knurls to provide a more textured grip when mounting or removing it from a lens. This step-up ring features a lightweight, aluminum-alloy construction that has a corrosion-resistant, matte black, hard anodized finish for durability and to minimize reflections.。Size: 7-77 mm。Thickness: 4.05 mm。Material: Aluminum alloy。Knurling: Side。 。 。 。
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