NAPA has the swivel knuckle joint you need for an impact wrench. Napa's are everywhere in MN aren't they?

I wouldn't try a chrome knuckle, it would blow apart real quick. You can't get a whole lot of angle with an impact anyhow.
The chrome extentions won't last real long, but you can use them if you have several. Depends upon your needs, many or heavy loads, or just light stuff. The black extentions will last longer.
I got my electric impact when I moved 2 bins off the neighbor property, had to take off 2 rings of sheets. Myself & 4 friends who didn't know much went at it. Another fellow & his son showed up that day to move his bin (he bought the rusty one...). They fooled around a bit with wrenches & hammer & ladders & an angle grinder. Heard some strange language now & then.... And saw blue smoke. No - real blue smoke, from the angle grinder....
After a while they watched us for 5 minutes. Father says to his son: "Help them. Anything they want you to do. Learn what they are doing. I'll be back in 1/2 hour."
He came back with the same impact I had.
Was a pretty cool day, enjoyed learning how to operate my impact gun with a garin bin dangling on 3 bin jacks.

As if we could teach anyone anything in that time was cool.
--->Paul