... Quick Coupling: 1) Type: A, B, C, D, E, F, DC, and DP; 2) Size: 1/2", 3/4", 1 ... ", 1-1/4",1-1/2",1-3/4", 2", 2-1/2", 3", ... handling, agricultural, and water, etc. 1) Material: brass 2) Type: A, B, C, D, E, F, DC, ... ", 1”, 1-1/4",1-1/2",1-3/4",2",2-1/2",3",4" ,5"&6"4) Feature ... accurate fit, join fast and save effort. (2)Recess holds gasket firmly in place assuring proper placement ...