Anyone Know what a "Karcher K series pressure washer receptacle is?

Evening all,

I received one of these little sandblast attachments exactly as pictured below. Problem is i have a "normal" pressure washer, just like the 10 before it, that all had screw on, i'm assuming M22, thread.

The plastic thing on the end of this attachment renders it basically useless for me. I've googled for the female version of this, to some kind of thread i can adapt, with no success. Even looked for a new handle that had this goofy receptacle. notta.

Any help out there in mopar land?




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