quick coupling,fast coupling aluminium 1.material:aluminium 2.Kinds:A,B,C,D,E,F,DC,DP ... :Coupling -- Equal coupling, Reducing coupling, Adjustable coupling, coupling with screw;Elbow -- equal elbow, reducing elbow, elbow with plain end, elbow with screw; Tee -- equal tee, reducing ... Quote?Not Hesitate,Time is Money ! ! ! quick coupling,fast coupling aluminium