Specification Binding : Electronics Brand : Hasselblad Label : Victor Hasselblad AB Manufacturer : Victor Hasselblad AB Model : 40541 PackageDimensions_Weight : 0.687500 PackageDimensions : L:5.12 X W:4.33 X H:2.76 PartNumber : 40541 ProductGroup : Photography ProductTypeName : CONSUMER_ELECTRONICS Publisher : Victor Hasselblad AB SmallImage_Height : 36 SmallImage_URL : https://m.media-amazon.com/images/I/41cfgLJlY4L._SL75_.jpg SmallImage_Width : 75 Studio : Victor Hasselblad AB Title : Hasselblad 40541 Extension Tube 16 for 503CW Camera Weight : 0.7 WeightUnit : pounds