This is the connection you will need to extend the OE hose on your AR Blue & SunJoe. It takes a 15mm M22 and adapts that to a 3/8″ female connection. What you would do is thread a 3/8″ plug onto this so you can quick disconnect your extension hose.
M22 15mm Is Compatible with the following pressure washers (Active VE56/52, AR Blue Clean Consumer Line, Sun Joe, Comet, Simoniz)