This is a set (2 pieces) of Standard Brass Quick Connect Fittings for Your Pressure Washer Ball Valve, Pump, Spray Gun or other accessory | Max. Working Pressure: 5,000 PSI | 1 pc: 3/8-Inch MPT Quick Coupler Plug | 1 pc: 3/8-Inch MPT Brass Quick Coupler Socket | Works with Standard Quick Connectors