Nelson Brass Industrial Pipe and Hose Fitting for Female Hose to 3/4-Inch Female NPT or Female Hose to 1/2-Inch Male NPS, Double Male 50572 Double male or male and female: 3/4-inch male (nh) and 1/2-inch female (nps) or 3/4-inch male (npt) Connects to female garden hose (nh) and 1/2-inch male pipe (nps) or 3/4-inch female pipe (npt) - dual threaded Machined brass Double male or male and female: 3/4-inch male (NH) and 1/2-inch female (NPS) or 3/4-inch male (NPT). Connects to female garden hose (NH) and 1/2-inch male pipe (NPS) or 3/4-inch female pipe (NPT) - DUAL THREADED