That looks very interesting. If you order it let us know how it works. I have a Karcher pressure washer that my wife bought at a tag sale this summer. Only used it once, but it did work well. Now you got me wishing for spring to check this out; way too cold to be doing that now.
I just bought an identical one for $19 on eBay with the "correct" end for my machine. If you want this karcher thing for whatever it cost to ship lmk. I can't see buying a $9 adapter when the RIGHT attachment is only $19