Oregon 37-051 Pressure Washer Quick Connect Coupling 3,650 PSI Max 7.8 GPM 300-Degree F Max 3/8-Inch Female Inlet & 22mm x 1.5 Female Outlet Pressure washer quick connect coupling 3650 Maximum pounds-per-square-inch It has 7.8 GPM Maximum temperature 300 degree fahrenheit Measures 3/8-inches female inlet, 22 by 1.5mm female outlet