Specification Binding : Electronics Brand : NiSi Label : NiSi Manufacturer : NiSi MaterialType : aluminum alloy Model : 42256 PackageDimensions_Weight : 0.13 PackageDimensions : L:4.21 X W:4.21 X H:0.71 PartNumber : NIP-V5-AD72 ProductGroup : Photography ProductTypeName : CONSUMER_ELECTRONICS Publisher : NiSi Size : 72mm SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/31h4iM5aJKL._SL75_.jpg SmallImage_Width : 75 Studio : NiSi Title : NiSi 72mm Adapter for NiSi 100mm Systems | Low Profile Step-Up Adapter for Use on NiSi 100mm Systems | Long-Exposure and Landscape Photography Weight : 0.1 WeightUnit : pounds