1) Storz type coupling 2) Made of aluminum 3) Many sizes available: 1", 1.5",1.75",2",2.5",3",4",5" 4) Packing by carton 1) Storz type coupling2) Made of aluminum3) Many sizes available: 1", 1.5",1.75",2",2.5",3",4",5"4) Packing by carton5.) we can offer high quality and quickly delivery time and also good service Storz Type Coupling