... include Aluminium,brass,pp,stainless steel. 2.Coupling type:A,B,C,D,E,F,DC Camlock quick couplingCoupling material: brass (PP ... B C D E F DP DCCoupling Size: From 1/2" to 6"The groove cam lock coupling are used for lay ... flat hose, fire hose and others. Quick coupling(aluminium,brass,pp,stainless ...