Specification Amount : 7.98 Binding : Jewelry Brand : Fotodiox Color : Black CurrencyCode : USD Label : Fotodiox Inc. Manufacturer : Fotodiox Inc. MaterialType : Metal MetalType : Aluminum Model : 04sr5572 PackageDimensions_Weight : 0.02 PackageDimensions : L:3.799999996124 X W:2.399999997552 X H:0.099999999898 PartNumber : 04sr5572 ProductGroup : Photography ProductTypeName : RING ProductTypeSubcategory : 42101610 Publisher : Fotodiox Inc. Size : 55-72 mm SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/31PIdIrEhYL._SL75_.jpg SmallImage_Width : 75 Studio : Fotodiox Inc. Title : Fotodiox Metal Step Up Ring, Anodized Black Metal 55mm-72mm, 55-72 mm Weight : 0 WeightUnit : pounds