Air Chief Automotive Interchange Quick-Connect PlugsQuick-Connect plugs are compatible with the popular makes of automotive quick-connect fittings, including Amflo, Dill, Milton and Truflate. Strong plugs are rated at 300 PSI. Durable plugs withstand a wide temperature range, from -40°F to 150°F. All-steel plug designed for strength and durability. Body Material: Steel; Connection Type: Male/Male; Male Quick: 1/2 in; Male Thread: 1/2 in (NPT); Operating Pressure: 300.0 psi [Max]; Operating Temperature: -40 °F [Min], 250 °F [Max]; Weight: 0.01 lb.