Sensei PRO 37-52mm Aluminum Step-Up Ring Rosco 200822200120 This single-layer Blu-ray disc is

This single-layer Blu-ray disc is designed for one-time recording and should be used with BD-R hardware

Dimensions Diameter: 5

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UPC: 847628580084

1 x Micro-USB

Sensei PRO 37-52mm Aluminum Step-Up Ring Rosco 200822200120 This single-layer Blu-ray disc isUse 52mm Filters on 37mm Lens Knurled Sides for Firmer Grip Matte Black Finish Minimizes Reflections Corrosion Resistant Hard Anodized Finish The Sensei PRO 37 52mm Aluminum Step Up Ring permits the use of 52mm threaded filters on lenses with 37mm 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