Eaton Hansen 2609 Steel 210/310 SERIES ARO Interchange, Coupler Plug, 1/4" Body size x 1/4" NPT Female Automatic quick coupler plug for shut-off when disconnected Zinc-plated steel for strength and resistance to corrosion 1/4" female NPT connection for connecting to a hose and 1/4" coupler connection Maximum pressure rating of 250 psig Temperature range of -40 to +200 degrees F