Cam&groove coupling Alumninum. Size:1/2"-- 6", Type: A,B,C,D,E,F,DC,DP, ... DA,SA,AA, Standard: DIN EN 14420-7-2005. Cam ... &groove CouplingAluminum Cam Lock CouplingUsed in a wide variety of applications for petroleum ... great resistance to vibration.4) Size:1/2", 3/4", 1" , 11/4", 11/2", 2 , 21/2", 3", 4", 5", 6" 5) Type ...