2-1/2″ Pressure Washer Pressure Gauge Kit, 3/8 Inch Quick Connect, 5000 psi Pres by | Jul 27, 2026Unit Count 1.0 Count. Material Brass, Copper Alloy, Stainless Steel. Boudon tube : Copper alloy. Process connection : 3/8″ quick connection, socket and plugs. Working temperature : -4 to 140 deg F/-20 to 60 deg C.