Universal 40.555mm.4.5mm to 55mm Step Up Ring Filter Adapter for UV,ND,CPL,Metal Step Up Ring AdapterProduct DescriptionBrand Amopofo It is 100Percent brand new and quality is guarantee. top of the line quality, deluxe.Adapter Using ultra precision CNC machine tools, sophisticated material, high intensity, good operation stability caliber40.555mmModel Number40.555mm ColorBlackSuitable CameraMaterialAluminum Function Transform caliber adapter ring, can be mounted to the front of the lens to achieve different diameter share the same lens diameter filter, lens hood, additional lens and other accessories. The purpose is to increase the diameter of the lens. Change the filter or adapter or lens or other size from small to big. Compatiable For To the side of the lens40.5mm To the side of the filter thread 55mm Package Includes 40.555mm Metal Step Up Ring Adapter x 1pcs Plastic package box x 1pcs