These are the brass QD's from McMaster-Carr that many use on their Brutus rigs. http://www.mcmaster.com/#6739K59
14 Plugs, Threaded Male Pipe 6739K59 (1/2" NPT threads)
8 Sleeve-Lock Sockets, Straight Barbed 6739K64 (for 1/2" ID hose)
10 Sleeve-Lock Sockets, 90° Barbed 6739K68 (for 1/2" ID hose)
These are used and may have some discolored spots. I have soaked and scrubbed all pieces in PBW. There may be tiny bits of teflon tape on some of the threads of the male plugs, where I couldn't get it loose. Won't affect your seal.
New this set would cost $159.58 + shipping. Asking $120 shipped.