... coupling manufacturers and suppliers in China, you can get 1"-6" aluminum / brass storz fire hose coupling free sample ... or BrassTrademark: PAPAGENOOrigin: TianjinStandard: DINConnection: FemaleHead Type: RoundSize: 1"-6"Casting Method: Gravity CastingStandards: DIN 14301Specification: CEHS Code: 7609000000Product ... and so on .3.Size:1",1-1/2",1-3/4",2", 2-1/2", 3", 4", 6"are available Storz Fire Hose ...