Topring offers wide range of Quick disconnect couplers and plugs. Here are the major options:
1/2 TRUFLATE, 1/4 ARO, 1/4 INDUSTRIAL, 1/4 Industrial and 1/4 Truflate, 1/4 LINCOLN, 1/4 TRUFLATE, 1/4 UNIVERSAL, 3/8 INDUSTRIAL, MEGAFLO, STAUBLI, ULTRAFLO EUROPEAN