Karcher 2.643-005.0 Pressure Washer Rotating Wash Brush

This is my first and hopefully last product review.
This product was designed by someone who had never used the Karcher pressure washer. The major flaw is that the brush attaches in a straight line to the handle of the washer in such a way that for you to make contact with the brush head to your car the handle of the spray gun ends up scratching your car.
Take a look at the picture of the lady washing the hood of her car in the advert picture, note that the brush head is almost on the same line with the handle of the spray gun. Now try to imagine her moving the whole assembly towards the car and am sure you can see what I am referring to. That means that the only part of your car that you can wash comfortably with this brush is the hood or trunk of your car.
There are two work arounds, 1) angle the brush head such that only a portion makes contact with your car thereby keeping the handle of the sprayer off your paint work, by doing this the inner rotating brush...Read more

Purchased this item to use with the same brand pressure washer.
There is absolutely no way to connect it to the pressure washer I have.
Also wasted a bunch of time trying to contact (no success) a human from Karcher.
Better instructions would have helped.
Looks like it would work OK with a means of connection.