Install is easy, just screw the adapter onto the foam cannon. The adapter hooks up only to the foam cannon, and the back piece of the adapter looks like the back connector piece on wands that come with all Karcher power washers. Because of this standard functionality is maintained as you swap the foam cannon out for your preferred pressure washer wand choice. Literally just push and twist to change out. The fit of the adapter is good enough for you to use your foam cannon/lance to spray foam on your car with a healthy amount of foam, but the fit could be better as water will leak out the side. One thing I did to aid this was some simple plumber tape that I had left over from installing a new shower head. Overall if you have a Karcher power washer and want to use a foam cannon this is a must have.

Good fit not perfect but very good product still.

Exactly what I needed to connect the DI Accessories Foam Lance to my Karcher X-Series pressure washer. The fitting simply screws onto the foam lance and you're ready to go!