Specification Binding : Electronics Brand : Fire Rock Label : Fire Rock Manufacturer : Fire Rock Model : FR-77-82 PackageDimensions_Weight : 0.0440924524 PackageDimensions : L:4.1732283422 X W:4.1732283422 X H:0.1574803148 PartNumber : FR-77-82 ProductGroup : Photography ProductTypeName : CAMERA_OTHER_ACCESSORIES Publisher : Fire Rock Size : 77-82 SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/41inqUXdUuL._SL75_.jpg SmallImage_Width : 75 Studio : Fire Rock Title : 77mm-82mm Step Up Ring(77mm Lens to 82mm Filter, Hood,Lens Converter and Other Accessories) (2 Packs), Fire Rock 77-82 Aerometal Camera Lens Filter Adapter Ring Weight : 0 WeightUnit : pounds