... ,DIN2828,JIS SIZE:1/2" TO 8" MATERIAL:BRASS,STAINLESS STEEL,ALUMINUM,PP,NY Hose Quick CouplingHose Coupling and Quick Coupling ... ,B,C,D,E,F,DC,DP. Material:Aluminum/Stainless steel/Brass/PP/Nylon Size:1/2",3/4",1",1 ... with S/S & Brass , Pin with SS & Steel , Ring and Safety Pin with S/S & Steel , Gasket with Nbr & Epdm & Viton,PTFE envelop ...