riderjwc

Thanks to everyone on the forum for your helpful advice. After reading your suggestions, I figured out how I may be able to solve my problem with tools I already have (a necessity since I have little remaining space in my garage for any additional), so I got an off-the-shelf garden hose quick connector, took a 5/8" drill bit (yes, I discovered that it took a 5/8" hole to clear the rubber washer on the connector on the SunJoe hose) and drilled out the center to make a "proprietary" connector of my own. Worked like a charm (see photos).

I agree that this is what I would need IF the other end of the brass fitting in your photo (the end not visible) slips over a 3/8" male end. It's difficult to eyeball and I don't expect you to disconnect your adapter and measure it so, is there a model number on the adapter or do you still have the label that was attached to this adapter?

I'm trying to to get these two to connect (see below photo). The black hose/connector is the SunJoe pressure washer hose and you can see the inside of it better in the above photos. The male end inside the hose connector is indeed 15mm (I had to put a caliper on it to be sure). That's why the 1/4" adapter the others suggested won't work (it's roughly 1mm too small to connect). So, Devon, do you think I'll need all 4 parts shown in the link you provided to make this work? BTW, thanks a lot SunJoe for making it difficult for those of us who don't have YOUR foam cannon. I won't be buying any more of your products. You got greedy by trying to make those of us who already had a foam cannon equipment/trigger buy yours too.

I have the SunJoe SPX-3500 pressure washer. The hose for it has what I think is an unusual connector on each end of their hose. I can't find an adapter that will allow me to hook it to my Adams's Foam Gun and Cannon combo. Each end of the SunJoe hose appears to have a 3/8" male connector inside a standard thread female garden hose connector (see attached photos). Does anyone know where I can find such a connector? I couldn't find anything that works at Lowes Home Improvement or Home Depot.