2-1/2″ Pressure Washer Pressure Gauge Kit, 3/8 Inch Quick Connect, 5000 Psi Pres by | Jul 22, 2026Unit Count 1.0 Count. Material Type Brass, Copper Alloy, Stainless Steel. Material Brass, Copper Alloy, Stainless Steel. Boudon tube : Copper alloy. Process connection : 3/8″ quick connection, socket and plugs.