nickle plated brass fitting hexagon body male threaded size 1/4, 3/8, 1/2, 3/4 up to 2 iinch hose connector, size 12mm, 16mm Brass fitting, A-8623 ... model, 1"X26mm, 1-1/4"X33mmhot ... NPT thread, 3/8, 1/2, 3/4, 1 and max to 2 inch.Hose end from 12mm to 33mm.Material optional: brass (HPb57-3A ...