... ",1.75",2",2.5",3",4",5",6" 2.type: American coupling, British coupling and others supply fire hose coupling ... according to your requirements1.Models: Nakajima coupling, John Morris coupling ,American type coupling, British type coupling and so on2. nominal diameter: 80mm3 ... .5",1.75",2",2.5",3",4",5",65.type:John Morris coupling, Storz coupling, American coupling, Nakajima coupling, Can-lock ...