BLACK FILTER IS THE GARDEN HOSE SIDE AND THE RED WASHER IS THE PRESSURE WASHER INLET SIDE. THIS SHOULD ONLY BE HAND TIGHTENED.
This part isn't as complicated as it may seem. It is a female part that fits anything low pressure (garden hose) related.
It is 3/4" Female BSPM to 3/4 GHT.
This adapter is used to replace the stock plastic adapter on most pressure washer inlets. Works for Comet, AR, Karcher, Etc
Note: At times I will need to source other companies to provide these to you. Don't be alarmed if it looks a little different than the adapter that are in the photos and are a different brand.