This adapter allows the use of 77mm threaded accessories on a lens or with a 62mm thread. Its special design prevents vignetting, ensuring excellent photo quality. The ring is made from high-quality aluminum. It is used to attach filters, covers, converters, and other accessories to lenses or cylindrical collectors. The adapters are made from a special metal alloy, lightweight yet resistant to thread wear, black in color, and coated with a protective layer that prevents repeated screwing and unscrewing without damaging the lens or filter. These adapter rings are known for their high quality and precise craftsmanship.